Art of Problem Solving: Introducing Ratios

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  • Опубліковано 13 січ 2025

КОМЕНТАРІ • 449

  • @YAABKA1
    @YAABKA1 7 років тому +413

    the ratio of kids to adult at a party 5:2 ( It's really simple this is what you do ) Add together the ratio ( 5+2=7) Than the answer which is 7 multiply by the ratio example (7*5=35) and also ( 7*2=14) there are 35 kids and 14 adults

    • @z84charmz
      @z84charmz 6 років тому +12

      That is just the easy part smh

    • @7Logik
      @7Logik 6 років тому

      Wow

    • @emmanuelvillanueva1766
      @emmanuelvillanueva1766 6 років тому +29

      So the answer is:
      5+2=7
      7×5=35
      7×2=14

    • @miagym3154
      @miagym3154 6 років тому +11

      Omg thank you so much, much simpler👍😂

    • @AliHussain-uh9xt
      @AliHussain-uh9xt 5 років тому +6

      My man just made me remember that working out that my techer told me thx

  • @evageorgieva3576
    @evageorgieva3576 6 років тому +16

    If you are confused...
    First Problem:
    5+2=7
    7x2=14 ( which is the number of adults)
    we now know that we have to multiply 7 by 5 to find the number of kids:
    7x5=35
    and if you are asked to write your answer as a ratio:
    35:14
    -----------
    *Always write the ratio the way they began it in the problem: KIDS TO ADULTS.
    Second Problem:
    5-3=2 ( to find the difference between adults and kids ) ( difference is 2 )
    3x5=15 ( to find total number )
    15-2=13
    13x3= 39 (number of kids)
    13x5=65 (number of adults)
    and if you are asked to write your answer as a ratio:
    39:65
    -----------
    *Always write the ratio the way they began it in the problem: KIDS TO ADULTS.
    I hope that helped some of you. :)

  • @jaironeduque8241
    @jaironeduque8241 4 роки тому +61

    2021 still watching from 9 years before this video

  • @PhumzileXolile
    @PhumzileXolile Рік тому +6

    I was so lost in class but I knew I had u for backup 🎉🎉😂😅

  • @emmagracecooks6827
    @emmagracecooks6827 6 років тому +41

    are you kidding!! he is the best teacher EVER!! I have watched every other video about ratios and this one actually made sense! THANK YOU

    • @cold6334
      @cold6334 4 роки тому +2

      it does?...idk man

  • @zaviondenton7992
    @zaviondenton7992 2 роки тому +1

    In a bicycle shop, the ratio of tricycles to bicycles is 6:11.
    Calculate the amount of bicycles in the shop given that there are 90 tricycles in the shop.

  • @richaka
    @richaka 8 років тому +60

    Dude, you are making this harder than it is. 5kids = 2adults, xkids = 14Adults. solve for x? Cross multiply, you get 2x = 70, divide both sides by 2, you get x = 35.

    • @zaviondenton7992
      @zaviondenton7992 2 роки тому +8

      i dont understand your theory

    • @emmanuelukevwe1547
      @emmanuelukevwe1547 Рік тому +4

      Yeah. Very easy to work it out that way. This guy is really confusing and rounding . Literally got confused for this simple question 🤦‍♂️

    • @humbleobot7615
      @humbleobot7615 Рік тому +3

      It's not for you but for kids

    • @original2858
      @original2858 Рік тому +1

      Which 35 is correct as you suggested but kids are getting altogether which they’ll add 35 to guest and get that amount however kids are only adding the answer they get from cross multiplying instead of adding to get “altogether” teachers are now showing this way

    • @original2858
      @original2858 Рік тому +1

      I got a question;
      A barn is drawn 3/4 inch=4 feet. If the actual height of the barn is 59 feet, what is the height of the barn in the drawing?

  • @sprite3514
    @sprite3514 8 років тому +57

    That odd pause at the begging......

    • @zynkui5206
      @zynkui5206 6 років тому +4

      Cindy Prokop beginning*

    • @nickgill6639
      @nickgill6639 4 роки тому +1

      That is what you noticed

  • @Lorna-AnneCampbell-qh4mo
    @Lorna-AnneCampbell-qh4mo 6 місяців тому +1

    Mad how mad how this still useful twelve years later watching this in 2024

    • @2Dpdf
      @2Dpdf Місяць тому +1

      I know right

  • @tarungogoi7560
    @tarungogoi7560 6 років тому +7

    Thanks for making the video it helped me in the exam room

  • @dizzysdiamonds
    @dizzysdiamonds Рік тому +2

    Wow ...that's how you start a video !!! Why didn't I have someone like you 25 years ago

  • @escarface
    @escarface 10 років тому +5

    I've watched like 6 videos and this help put the final thought process into motion. I wish all videos would explain the thought process of the last problem. This is where most of the confusion comes from

    • @vincentxie3090
      @vincentxie3090 10 місяців тому

      Hello, are you still active in your channel

  • @khandohenders5478
    @khandohenders5478 3 роки тому +14

    Thank you so much, ive struggled with this for long, but you have made it simple for me to understand.

  • @JanexConfetti
    @JanexConfetti 4 роки тому +21

    doesn't his fingers hurt from all that writing on the board

  • @NoahCook-qw6pj
    @NoahCook-qw6pj 4 місяці тому +1

    I feel like when you have 39 kids at a party you can have a kids' party.

  • @Mary-cd3cl
    @Mary-cd3cl 3 роки тому +1

    You know what I’m going to subscribe because you’re awesome

  • @yolandasteenkamp3862
    @yolandasteenkamp3862 4 роки тому +3

    ok so this is a easy way so the ratio of kids to adult at a party 5:2 ( It's really simple this is what you do ) Add together the ratio ( 5+2=7) Than the answer which is 7 multiply by the ratio example (7*5=35) and also ( 7*2=14) there are 35 kids and 14 adults

  • @YAABKA1
    @YAABKA1 7 років тому +7

    The problem is not maths or the formula he used but communication we all don't see things the same that can make something simple very hard to understand all he was saying was 26 more people and he jumps to 13 not going in great detail I must thank him doe for putting this video up THANKS Those who wants to go into more detail the second ratio please look into this
    1. 3=5 - 2 MORE ADULTS
    2. 6=10 - 4 MORE ADULTS
    3. 9=15 - 6 MORE ADULTS
    4. 12=20 - 8 MORE ADULTS
    5. 15=25 - 10 MORE ADULTS
    6. 18=30 - 12 MORE ADULTS
    7. 21=35 - 14 MORE ADULTS
    8. 24=40 - 16 MORE ADULTS
    9. 27=45 - 18 MORE ADULTS
    10. 30=50 - 20 MORE ADULLTS
    11. 33=55 - 22 MORE ADULTS
    12. 36=60 - 24 MORE ADULTS
    13. 39=65 - 26 MORE ADULTS
    SOME THINK IF YOU MULTIPLY BY 2 ( WHERE DID THE 2 COME FROM? WELL EVERY 3 KIDS THERE IS 5 ADULTS THAT IS 2 MOR EXTRA ADULTS) THAT WILL GIVE YOU 26 THAT IS 13 BECAUSE ( 13X2 = 26) now let’s go back to the original ratio which was 3:5 so let’s see 13 MULTIPLY by 3 gives me 39 KIDS and also do the same for the other part 13 multiply BY 5 GIVES ME 65 ADULTS THAT IS 26 MORE ADULTS ARE YOU STILL CONFUSED LETS SIMPLY 65-39= 26 I HOPE THAT HELPS

    • @fergusthomson821
      @fergusthomson821 6 років тому

      So is his final answer wrong?

    • @NoxiousLynx
      @NoxiousLynx 3 роки тому

      thank you! this was very well communicated unlike the dude in the video who didn't communicate clear enough.

  • @abiudwilsonkavara3575
    @abiudwilsonkavara3575 5 років тому +3

    Total conversion cost is N$500 000. Direct labour and the other element of conversion cost are
    in the ratio of 3 : 2 to total conversion cost. Direct material is 5 times more than indirect material
    and 3 times more than direct labour. Indirect material is already included in the N$500 000
    conversion cost.
    Required:
    Calculate the following:
    Direct material used
    Direct labour
    Manufacturing overheads
    Manufacturing cost
    Primary cost

  • @an.jahnke7632
    @an.jahnke7632 2 роки тому

    i'd bet big money that your students love you.!, Very nice presentation.

  • @BaelieYoung
    @BaelieYoung 11 років тому +11

    What kind of board are u using in this video?

    • @vincentxie3090
      @vincentxie3090 10 місяців тому

      Hello, are you still active in your channel

  • @bean03o-AJ
    @bean03o-AJ Рік тому +23

    I am so confused

  • @BigDawg-uv2mz
    @BigDawg-uv2mz 6 років тому +3

    where did u get two to multiply

  • @galaxycookie75
    @galaxycookie75 4 роки тому +1

    This is helpful as now we can not go to school because of corana, we can learn how to do Ratios from here , l was confused in Ratios but after watching this video l am not so thanks , l will share this video with my class.

    • @galaxycookie75
      @galaxycookie75 4 роки тому +1

      Btw the start was kind of weird because you had a little pause in the start

  • @vegtea1637
    @vegtea1637 7 років тому +6

    This helped me a lot

  • @Kraeeer7i
    @Kraeeer7i Рік тому +2

    The intro is so nostalgic

  • @silxbeats
    @silxbeats Рік тому

    You made this video very interesting to watch...

  • @markxsons9330
    @markxsons9330 10 років тому +2

    Daniel's mother gives Daniel and his brother the same amount of allowance every month. By mistake, Daniel gets more allowance this month. The ratio of his allowance to his brother's allowance is 7 : 4. Daniel decides to give his brother some money so that both of them will have the same amount. If Daniel has $238 now, how much must Daniel give to his brother?
    Plz reply...

    • @leonardbriffa2193
      @leonardbriffa2193 9 років тому +3

      Mark Xsons ratio 7:4 and daniel gets 238dollars. thus 7 times X is 238. X is 238/7=34. now find his bros pay. 4x34=136. total dished out by mom. 238+136=374,divide by 2=187 each but daniel got more and his bro less--238-187=51 dollars he needs to give his bro to come equal

    • @eternalending8807
      @eternalending8807 6 років тому

      136

  • @jasmeena2008
    @jasmeena2008 6 років тому +2

    Please could you write the English translation below (cc)

    • @rarokadia
      @rarokadia 4 роки тому

      It means that they are captions

  • @izamarmartinez6805
    @izamarmartinez6805 4 роки тому +1

    5/2=x/14
    we are looking for kids so we put it as x.
    cross multiply: 2x=70
    get x by itself therefore you divide 2 on both sides to cancel out the 2.
    2/70=35
    x=35
    ratio: 35:14
    I guarantee you are using common core.

  • @saritasalome5304
    @saritasalome5304 2 роки тому +1

    I don’t understand the 2nd problem 😩 how you get the 13 ?

  • @jamesshaw3622
    @jamesshaw3622 3 роки тому +5

    One of the worst parts about math for me was learning how to do one problem, multiple ways.
    I can learn how to solve a math problem multiple ways, but it usually confuses me in the end, during the step-by-step process. I get the multiple solutions confused with each other.

  • @sk_davron1142
    @sk_davron1142 9 років тому +53

    it did not help me at all what you did does not make any sense at all thank you for your video but it was hard to understand

    • @YAABKA1
      @YAABKA1 7 років тому

      shorter way is 26 divide by 2 =13
      Than 13*3=39 kids
      13*5 = 65 adults isn't that easy

    • @YAABKA1
      @YAABKA1 7 років тому +5

      the ratio of kids to adult at a party 5:2 ( It's really simple this is what you do ) Add together the ratio ( 5+2=7) Than the answer which is 7 multiply by the ratio example (7*5=35) and also ( 7*2=14) there are 35 kids and 14 adults

    • @zuhaibahmed6078
      @zuhaibahmed6078 7 років тому

      why did not you do same as you solve the first Q. i.e 5:2 means 5+2=7 then 7x5=35, 7x2=14. Is it not the same as first ? why can't we do 5+3=8, then 8x5=40, 8x3=21?

    • @tonysimon843
      @tonysimon843 7 років тому

      Sk_Davron 123 that's so true hi my friend

    • @tonysimon843
      @tonysimon843 7 років тому

      It's very nice to wach but board👎👎👏👊😜😮💣💣🔫🔫🎭💊🅿

  • @shreyadhap9981
    @shreyadhap9981 4 роки тому +3

    Really good for me to learn

  • @Gen3ralGrimReaper
    @Gen3ralGrimReaper 3 роки тому +1

    On the first radio problem, how did he figure out he needed to multiple 2•5 & 2•2?
    On the second ratio, how did he figure out 13? I’m lost.

    • @vwyatt_16
      @vwyatt_16 3 роки тому +1

      Same 😌

    • @pamelachuks5205
      @pamelachuks5205 2 роки тому

      @@vwyatt_16 am also lost l don't know how he realized 13

  • @pheonadasilva6608
    @pheonadasilva6608 5 років тому +3

    its pretty easy thanks for this video it helped me very much

  • @ernestnadome9120
    @ernestnadome9120 4 роки тому +1

    U make it seem so easy

  • @tarungogoi7560
    @tarungogoi7560 6 років тому +2

    Very nice video I loved this method

  • @anitalishneva4318
    @anitalishneva4318 Місяць тому +1

    Just divide 5 by 2 which is 2.5 and multiple that for 14 to get 35

  • @allanlam7669
    @allanlam7669 7 років тому

    For everyone that doesn't understand immediately, you will, eventually. Because whilst he doesn't write down the words "group", or "grouping", he mentions and emphasizes it, and really stresses it throughout the video.
    The fact that he doesn't specifically outline it, makes the video especially memorable and fulfilling to understand, because you really have to concentrate, both on what he writes, and on what the says, at the same time! I thoroughly enjoyed it after watching it a few times to fully understand it. You realise what how experienced he is. He earns my trust. It may not kick in today, but it will stick longer and when we need it, it will be there.

  • @doublerubyadventures
    @doublerubyadventures 2 роки тому

    I'm new thank you for the help and I loved the energy so I'm a new subscriber

  • @crocodileguy4687
    @crocodileguy4687 5 років тому +2

    I think you did a good job explaining

  • @mashupervance5404
    @mashupervance5404 6 років тому +4

    Its so hard Uhmm.. 😤😥😧😩😰I have a question😑😮😴 | in 5:2= 2.5:2.2 | where did you get 2•5 and 2•2?😒😫😫😫

  • @mariammariam-ue1sy
    @mariammariam-ue1sy 6 років тому +9

    You made it complicated but Thank you though.

  • @YAABKA1
    @YAABKA1 7 років тому +1

    1. 3=5 - 2 MORE ADULTS
    2. 6=10 - 4 MORE ADULTS
    3. 9=15 - 6 MORE ADULTS
    4. 12=20 - 8 MORE ADULTS
    5. 15=25 - 10 MORE ADULTS
    6. 18=30 - 12 MORE ADULTS
    7. 21=35 - 14 MORE ADULTS
    8. 24=40 - 16 MORE ADULTS
    9. 27=45 - 18 MORE ADULTS
    10. 30=50 - 20 MORE ADULLTS
    11. 33=55 - 22 MORE ADULTS
    12. 36=60 - 24 MORE ADULTS
    13. 39=65 - 26 MORE ADULTS
    SOME THINK IF YOU MULTIPLY BY 2 ( WHERE DID THE 2 COME FROM? WELL EVERY 3 KIDS THERE IS 5 ADULTS THAT IS 2 MOR EXTRA ADULTS) THAT WILL GIVE YOU 26 THAT IS 13 BECAUSE ( 13X2 = 26) now let’s go back to the original ratio which was 3:5 so let’s see 13 MULTIPLY by 3 gives me 39 KIDS and also do the same for the other part 13 multiply BY 5 GIVES ME 65 ADULTS THAT IS 26 MORE ADULTS ARE YOU STILL CONFUSED LETS SIMPLY 65-39= 26 I HOPE THAT HELPS

    • @otakuelai4761
      @otakuelai4761 2 роки тому

      Its the little things that counts❤

  • @painful4711
    @painful4711 6 років тому +4

    Umm my first question would be where at

  • @chalky666
    @chalky666 2 роки тому

    bro this has helped alot not gonna lie

  • @Kattie1995
    @Kattie1995 6 років тому +1

    Wait why did you do 2 times 2?

  • @jonielgarcia5446
    @jonielgarcia5446 5 років тому +1

    Ratio does it mean.Comparing 2 quantities.
    5:2=kids to adults
    How many (Addition)
    5+2=7
    So multiply by 2 quantities
    7x5=35kids 7x2=14adults
    3:5 = kids and adults.
    Different or difference ( Subtraction).
    3-5=2
    3x5=15
    So Subtract 15-2=13
    And them multiply by 2 quantities.
    13x3=39 KIDS.
    13x5=65. 39:65 or 39:26
    Subtract! 39-65 = 26 ADULTS

  • @Ahmad-ne9co
    @Ahmad-ne9co 3 роки тому +1

    Proved helpful.... Cool method

  • @kxcrimson1454
    @kxcrimson1454 8 років тому +2

    you don't explained the problem!! you just worked it out like if we know!! very confusing!! please explain why u are doing each step!!! WHY!!!!

  • @deepi1723
    @deepi1723 4 роки тому +7

    I see more than 5 videos but i can't understand when i see this video my all concepts are clear

  • @SebastianJc
    @SebastianJc 5 місяців тому +2

    I did the thinking of 2x7 is 14 then 5x7 is 35

  • @chaaks9816
    @chaaks9816 7 років тому +14

    hahah i didnt get it at all

  • @spaceboiclub
    @spaceboiclub 6 років тому +3

    Thank you very much! :)

  • @shainaswaby4210
    @shainaswaby4210 5 років тому +2

    this helped a lot thank you I have a test on Monday and I now have a better understanding of ratio
    thank you so much 🥰

  • @cookielife9570
    @cookielife9570 4 роки тому +3

    Ratio always messes my mind up and makes me so confused.. 😑

  • @DaRealNoobKing
    @DaRealNoobKing 2 роки тому

    Theres a method for 3 ratios so imagine 36 docs for student A, B and C and ratio is 1:3:5 now 1+3+5=9 36/9=4 4x1=4 4x3=12 and 4x5=20 so 4, 12, 20 for the people

  • @hannavlogzi
    @hannavlogzi 3 роки тому +1

    Pov: it's 2021 and ur watching this vid for ur module

  • @0menadds
    @0menadds 6 років тому +1

    Cool ratio stuff. Thanks

  • @Mr.Respect-GX8
    @Mr.Respect-GX8 2 роки тому

    "So were done" *stares into your soul*

  • @tarungogoi7560
    @tarungogoi7560 6 років тому +2

    😊😊😊nice video

  • @lindacarter4543
    @lindacarter4543 9 років тому +4

    Are you the one that does number theory?

  • @tejhh8247
    @tejhh8247 7 років тому +1

    When he read the ratio 😂😂 0:41

  • @2Dpdf
    @2Dpdf Місяць тому +2

    Anyone watching this in 2024?

  • @yscarnage8345
    @yscarnage8345 3 роки тому

    thanks bro i can use this method for my ppe exams

  • @l0nlym1lk17
    @l0nlym1lk17 3 роки тому

    yooooooo math test tomorrow. and I'm British so you know im gonna do badly if I don't revise. wish me luck guys

  • @nmerimgbeahuruike7629
    @nmerimgbeahuruike7629 4 роки тому +1

    Very informative and the concept is clearly taught.

  • @genricmaraon7681
    @genricmaraon7681 10 років тому +5

    i dont under stand a think man how did u come up on dose numbers...pls explain it sir.

    • @YAABKA1
      @YAABKA1 7 років тому

      1. 3=5 - 2 MORE ADULTS
      2. 6=10 - 4 MORE ADULTS
      3. 9=15 - 6 MORE ADULTS
      4. 12=20 - 8 MORE ADULTS
      5. 15=25 - 10 MORE ADULTS
      6. 18=30 - 12 MORE ADULTS
      7. 21=35 - 14 MORE ADULTS
      8. 24=40 - 16 MORE ADULTS
      9. 27=45 - 18 MORE ADULTS
      10. 30=50 - 20 MORE ADULLTS
      11. 33=55 - 22 MORE ADULTS
      12. 36=60 - 24 MORE ADULTS
      13. 39=65 - 26 MORE ADULTS
      SOME THINK IF YOU MULTIPLY BY 2 ( WHERE DID THE 2 COME FROM? WELL EVERY 3 KIDS THERE IS 5 ADULTS THAT IS 2 MOR EXTRA ADULTS) THAT WILL GIVE YOU 26 THAT IS 13 BECAUSE ( 13X2 = 26) now let’s go back to the original ratio which was 3:5 so let’s see 13 MULTIPLY by 3 gives me 39 KIDS and also do the same for the other part 13 multiply BY 5 GIVES ME 65 ADULTS THAT IS 26 MORE ADULTS ARE YOU STILL CONFUSED LETS SIMPLY 65-39= 26 I HOPE THAT HELPS

    • @siouxdfroy845
      @siouxdfroy845 5 років тому

      YAABKA1 I ain’t reading that

  • @maleekacorniffe6070
    @maleekacorniffe6070 8 років тому +18

    the second ratio confusing

    • @YAABKA1
      @YAABKA1 7 років тому

      1. 3=5 - 2 MORE ADULTS
      2. 6=10 - 4 MORE ADULTS
      3. 9=15 - 6 MORE ADULTS
      4. 12=20 - 8 MORE ADULTS
      5. 15=25 - 10 MORE ADULTS
      6. 18=30 - 12 MORE ADULTS
      7. 21=35 - 14 MORE ADULTS
      8. 24=40 - 16 MORE ADULTS
      9. 27=45 - 18 MORE ADULTS
      10. 30=50 - 20 MORE ADULLTS
      11. 33=55 - 22 MORE ADULTS
      12. 36=60 - 24 MORE ADULTS
      13. 39=65 - 26 MORE ADULTS
      SOME THINK IF YOU MULTIPLY BY 2 ( WHERE DID THE 2 COME FROM? WELL EVERY 3 KIDS THERE IS 5 ADULTS THAT IS 2 MOR EXTRA ADULTS) THAT WILL GIVE YOU 26 THAT IS 13 BECAUSE ( 13X2 = 26) now let’s go back to the original ratio which was 3:5 so let’s see 13 MULTIPLY by 3 gives me 39 KIDS and also do the same for the other part 13 multiply BY 5 GIVES ME 65 ADULTS THAT IS 26 MORE ADULTS ARE YOU STILL CONFUSED LETS SIMPLY 65-39= 26 I HOPE THAT HELPS

    • @YAABKA1
      @YAABKA1 7 років тому +2

      shorter way is 26 divide by 2 =13
      Than 13*3=39 kids
      13*5 = 65 adults isn't that easy

    • @YAABKA1
      @YAABKA1 7 років тому

      the ratio of kids to adult at a party 5:2 ( It's really simple this is what you do ) Add together the ratio ( 5+2=7) Than the answer which is 7 multiply by the ratio example (7*5=35) and also ( 7*2=14) there are 35 kids and 14 adults

    • @zuhaibahmed6078
      @zuhaibahmed6078 7 років тому

      if there would be ratio 5:9 then which no. you use to dived?

    • @athens5379
      @athens5379 6 років тому

      I agree

  • @AtlantisPKXD
    @AtlantisPKXD 4 роки тому +1

    This is alot of help

  • @ranger7yago306
    @ranger7yago306 4 роки тому +1

    4:20 so confusing the dots :(

  • @scholium3370
    @scholium3370 8 років тому +4

    that was a beautiful presentation, such a variety of techniques too! well done.

  • @original2858
    @original2858 Рік тому

    Cross multiply doesn’t work for these problems. Basically if
    is 39 cows: 26 pigs and you have 52 pigs how many animals together? Answer is 117. 26+26 is 52 so you know it’s 2 times you have to do 39 cows. Which is 78 then just add 56 and 117 is total animals.

  • @pramodrekhamys
    @pramodrekhamys 4 роки тому +1

    Thank you very much for the vedio

  • @lachingona
    @lachingona 2 роки тому

    Great explanation!

  • @kais8585
    @kais8585 10 років тому +3

    Good Job buddy.. keep it up!

  • @brisk9459
    @brisk9459 4 роки тому +3

    Where did 13 come from in the 2nd problem

    • @VaresBoii
      @VaresBoii 4 роки тому +2

      That’s what I’m still trying to figure out!?!?!??

    • @VV-sl6eq
      @VV-sl6eq 4 роки тому +1

      It’s the difference , so 5 minus 3 = 2units, which is 26, so one unit is 26 divided by 2 which equals 13 :)

    • @sapphirecranfield38
      @sapphirecranfield38 4 роки тому +1

      Angela Yang I don't understand ;-;

    • @VV-sl6eq
      @VV-sl6eq 4 роки тому +1

      @@sapphirecranfield38 So the child's units is 3 and the adult's units is 5. You want to find the difference, so the difference of units is 5-3=2 units. But as the problem says, the difference of adults and kids is 26. Since 2 units and 26 are both the difference of adults and kids, 1 unit equals 26 ➗ 2 = 13. You probably don't need this part, but the kids are 5 units and 1 unit equals 13, so there are 65 kids.

    • @sapphirecranfield38
      @sapphirecranfield38 4 роки тому +1

      Angela Yang that helped a lot tysm

  • @lopitodrisi6751
    @lopitodrisi6751 7 років тому +14

    2+2is 4 -1 thats 3 quick maths

  • @Laurel3000
    @Laurel3000 6 років тому +2

    Thx 4 the help! (You saved me with my math homework!)

  • @kingdomman1947
    @kingdomman1947 5 років тому +1

    what if . the numbers where odd

  • @pilotrahulrajbhar
    @pilotrahulrajbhar 4 роки тому +1

    Why dont u cross multiple

  • @rainbowng1814
    @rainbowng1814 6 років тому +1

    So i have a question
    If 700coins are shared among A,B and C. It is known that the ratio of A to B is 6:7, and the ratio of A to C is 2:5. Find the number of coins in C's share.
    So my problem is, I know
    A:B =6:7 , A:C= 2:5
    But to find C's share out of 700, I need to find A:B:C, how do I calculate that?

    • @udow.7167
      @udow.7167 4 роки тому +1

      You take A as X. B in that case would be 7/6X. C is 5/2X
      Now it's easy:
      X + 7/6X + 5/2X = 700
      Makes X = 150.
      A = 150; B = 150 * (7/6); C = 150 * (5/2)
      A = 150, B = 175; C = 375.

  • @iamghostofuchiha6786
    @iamghostofuchiha6786 5 років тому +2

    5:2
    5
    -*14
    2
    5*7-35

  • @sararani6331
    @sararani6331 4 роки тому

    Who is the X in the second question

  • @JanexConfetti
    @JanexConfetti 4 роки тому +2

    nobody noticed that they uploaded this right after Christmas 2011

  • @Thegolsfam
    @Thegolsfam 3 роки тому

    I have test tommorow im nervous but this will help me out so goodluck me

  • @ameenjakobra3373
    @ameenjakobra3373 2 роки тому +2

    i didnt understand from this method :(

  • @xhlcus88
    @xhlcus88 4 роки тому +3

    *That reminds me of body parts*

    • @Chilly_edxts
      @Chilly_edxts 8 місяців тому

      I THOUGHT I WAS THE ONLY ONE 😭

  • @JanexConfetti
    @JanexConfetti 4 роки тому +1

    1:01
    IT TELLS US THAT THERE ARE 14 ADULTS AT THE PARTY

  • @raychellekrisbalolong9272
    @raychellekrisbalolong9272 4 роки тому +1

    I don't understand the second one

  • @ashleymaluks657
    @ashleymaluks657 7 місяців тому +1

    I understood the first example but the second one yhoo i don't understand it completely

  • @vincentxie3090
    @vincentxie3090 10 місяців тому

    I'm pretty sure he is using a interactive whiteboard for these question

  • @MsHarikrisna
    @MsHarikrisna 5 років тому

    Can somebody help me solve this?
    Nadeem had some local and foreign stamps. The ratio of the number of local stamps to foreign stamps was 3:4. She gave away 28 foreign stamps and the ratio of the number of local stamps to the number of foreign stamps became 9:8.
    How many local stamps did Nadeem have?
    How many foreign stamps did Nadeem have in the end?
    Pls. help, need to explain and practice my son about Ratio.

    • @udow.7167
      @udow.7167 4 роки тому

      X = number of local stamps; Y = number of foreign stamps
      I.) X + 4/3X = Y
      II.) X + 8/9X = Y - 28
      Now you put I.) into II.) to replace the Y:
      III.) X + 8/9X = (X + 4/3X) - 28
      some minor calculation to get X:
      X + 8/9X = (X + 4/3X) - 28 |+28
      X + 8/9X + 28 = X + 4/3 X | 4/3=12/9
      => X + 8/9X + 28 = X + 12/9X |-1X - 8/9X
      28 = 4/9X |*9/4
      63 = X. This is the number of local stamps.
      63 * 4/3 = 84. This is the number of foreign stamps in the beginning. 63:84 - this is the initial ratio of 3:4.
      84 - 28 = 56. This is the number of foreign stamps in the end. The ratio is now 63:56 or 9:8.

  • @kennethdumlao5646
    @kennethdumlao5646 7 років тому +9

    i cannot understand

    • @twists6552
      @twists6552 5 років тому

      Read the lastest comment....

  • @jamesnoellejavier7990
    @jamesnoellejavier7990 4 роки тому

    Why not just add the ratio then multipy the ratio?

  • @idahseoforeng1492
    @idahseoforeng1492 4 роки тому

    I did not understand but now I do thanks

  • @crazyy488
    @crazyy488 5 років тому +2

    Pls dont judge my working out
    First question 14 divide by 2 = 7
    7 X 5 = 35
    Secound question 3 : 5 the gap between 3 and 5 is 2 and there is 26 more then kids, 2 divided by 26 = 13, 13 X 3 = 39

  • @smayhem4963
    @smayhem4963 8 років тому +2

    What is that he's writting on?

  • @joolokeninekwaya2562
    @joolokeninekwaya2562 2 роки тому

    Thank for your help 🙂