Time and Work - Shortcuts & Tricks for Placement Tests, Job Interviews & Exams
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- Опубліковано 28 чер 2024
- Crack the quantitative aptitude section of Placement Test or Job Interview at any company with shortcuts & tricks on Time and Work. Extremely helpful to crack entrance exams like MBA, Banking - IBPS, SBI, UPSC, SSC, Railways etc.
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#TimeAndWork #QuantitativeAptitude #PlacementTest
0:00 Quantitative Aptitude
0:47 just INVERT
3:30 A can work 5 times faster than B and takes 60 days less than B to complete the work. In how many days does A and B individually can complete the work?
6:42 If 24 men can finish a work in 10 days, then find the number of days required to complete the same work by 30 men?
10:04 A can do a work in 3 days. B can do the same work in 6 days and C can do the same work in 7 days. If they work together, in how many days will they take to complete the work?
13:07 P and Q can do a work in 12 days. Q and R can do the same work in 16 days, and R and P can do it in 24 days. Find the time in which P, Q and R can finish the work together?
16:31 P can do a work in 30 days. Q is 25% more efficient than Pin completing the same work. In how many days will complete the work?
19:29 If 3 men can do a work in 2 days and 4 boys can do the same work in 6 days, then in how many days will the same work be
23:05 Sita and Gita can do a work in 20 days and 25 days, respectively. Both begin together but after a few days, Sita leaves. Then Gita finishes the remaining work in 10 days. After how many
28:04 When Palone does a work, he takes 25 days more than the time taken by P and Q working together to complete the work. But Q alone takes 9 days more than the time taken by P and Q
36:09 Raj can build a house alone in 16 days but Suraj alone can build it in 12 days. Raj and Suraj work on alternate days. If Raj
Practice Questions on "Time and Work" available at: www.careerride.com/mcq/time-and-work-quantitative-aptitude-mcq-questions-27.aspx
Sir dont get the Q.no ten 1-7/8 then remaining work will 1/8 could u pls explain it
tq sir really these are the best aptitude tutorials in youtube tq..
Hallelujah
@@manvisingh3189 matlab???
In 10th question,in 13thday1/16amtof work was remaining were Rdoes1/8amtof work.You took x factor to S i.e.,3/4.Whycan'tutake for R on 13th day itself???I think we shd take there itself weget1/2asx factor then the ans is12&halfday.Please reply to me
How Many People Are Watching in 2024 😂 Attendence Laga Do 👍
Amazing! who else watching during placement?
CTS 2-3 weeks to go , getting started now :p
CTS one week to go!! Now oly starting Quants
@@muthuramalingam8489 did yu attended the cts exam? R yet to come?
@@angelaa1594 Yet to Come!! Now oly preparing
@@muthuramalingam8489 ok!...how did yu preparing fa coding?
Sir :"Very easy"
"Extremely easy"
"See how easy it was"
"Very very very easy"😁😁
😂😂
😂😂
still difficult to understand for me😢
I'll be honest, I tried so many books and videos but no book/video made this topic easy than you guys did. Kudos. Thank you so much!!!!
Thanks for your kind words, Abhay. We're humbled :)
Easy way to solve Question No 6:
3 men do 1/2 amount of work so 1 men does 1/6 amt of work
4 boys do 1/6 amt of work so 1 boy does 1/24 amt of work
Therefore,
8 Men and 8 Boys do the work in,
8x(1/6)+8x(1/24) = 5/3
Inverting would give 3/5
P.S : I Really like these tutorials.. Now I have more confidence in solving Aptitude questions!
Same i also found this way easier
@@medxyskllyf3020 direct trick for similar questions:- 8/3*2+8/4*6
@@prakhargaur1298 is this crct method bro
10 th sum p= 16 ( 3)
Q= 12( 4)
So total 48 units of work and per 2 day they r doing 7 parts
2-7 parts
?-48 parts
96/7 = so per 13 days they do 91 parts and they left 5 parts na so 13 th day p do the work so per day p do 4 parts na so 1 part remained so this one part done by q in 1/3 days so total 14(1/3) but it is not working because 14× 7 = 98 it is more than total units so it is wrong were I did wrong plz explain na
I really like this method tq
Q9:: A already is working 8 hours/day . Now we can calculate the no. of days for B to finish if he works for 8hours/day.
B's total hours=8*10=80
if B is working 8hours/day=80/8=10
Now calculate simply A and B working together = 1/12 + 1/10
ans =60/11
Yep 👍🏻
I genuinely prefer this channel for all my aptitude like every video is neat and clear, thank you
You are a life saver sir, taught us with brilliant tricks and now I am able to solve similar problems with ease and effortless, Thanks a ton sir
You are helping a lot for poor people who unable to pay for online coachings and preparations and all. Tq so much sir😭🙏🙏
An easier method of solving question 10
just use the normal technique that he described earlier and at the end divide by 2 because only one person works on a given day
Raj does 1/16 work in 1 day
Suraj does 1/12 work in 1 day
Raj + Suraj when working alternating,
= 1/12 + 1/16 work in 2 days
= 1/2*( 1/12 + 1/16) work in 1 day
= 7/96 work in 1 day
Raj + Suraj does 7/96 work in 1 day, so, they do the work in 96/7 = 13.75 days
wowwww
Great 😃
It is applicable to all the sums in this model
Your answer is different from answer in video
@@palaktyagi5129 Video ans is wrong. This is correct.
Only this channel is my hope when it comes to quantitative techniques!! Thank you so much, Sir.
CONSISTENT SAMPLING
simple and clean way for ques no. 7-
let n be the days they worked together
we know total amount of work done is 1 so,
( 1/20+1/25 )*n + 10*( 1/25 ) = 1
9n/100 + 2/5 = 1
9n + 40 = 100
n = 60/9 = 20/3
I think it's more easy method
Oh yeah!!! thanks!!!!🙏🙏🙏
How 9n + 40= 100 came ???
@@gangothrinarayan4567 take the LCM of 100 and 5
@@gangothrinarayan4567 take lcm to previous step
For Qn 2
We can use an eqn
M1 ×D1×H1/W1 = M2×D2×H2/W2
Where M1, M2 - no of men
D1, D2 - no of days
H1, H2 - no of hours
W1 ,W2 - no of work
This eqn can be used in such type of problems. In this question
M1 = 24
M2= 30
D1 = 10
D2 =?
Therefore ,
M1×D1 = M2 ×D2
D2 =M1 ×D1/M2
= 24×10/30 = 8 days
😇😇😇😇
@Sushma hiii
Thankyou sm
Sir, U remind me my school time, the same way I have done in school, it is like I m revising things, Thank u,
Same, feel
One of the best tutor. Sir u make maths looks so easy... God bless u sir
Sir your lectures give me a morale boost to perform better in the exams and motivates to do better.
Its very beneficial for who are searching for placements.I AM GRATEFUL TO SAY THIS ''THANK YOU SIR''
These videos are much much better than paid aptitude sites... Thanku for sharing the knowledge with us
Super sir, am just gonna invert my placements💥✨
afternoon sir ! im a bank aspirant, an average student my basics over some topics was not clear and it gave me a lot of stress as i tried t solve them . i saw your video today and on one go i got everything . thank you so much im very happy!
I think this is the very best best platform to learn aptitude. Thank You So Much Sir For explaining us very clearly
The best maths class in UA-cam...
😁👌
Thanks a lot sir.
I bow my head to you.. Thank you Sir🙏
This aptitude is Useful For my Class 10th Syllabus..
I dont like Rot learning..
Need a video on tricks and important questions related to Calendar
Actually its very interesting and i luv to learn from careerride it just made it simple
Sir
A short talk I will tell
There are many short tricks and method which can solve problems in 2-3 lines only.
You make it more complicated and even tough for beginners students.
So take in mind short tricks bcoz in govt time given is very low.
But your effort is great towards your students
Thank You sir! Especially I found the last sum more clearer which was very confusing before.
thanks for all of your efforts in this aptitude series. love it
The fundamentals got so clear by the way you explained.
One of the best videos I have watched so far, covered almost all the types of question and that too with proper concepts...
Keep it up, more power to you!!!!
Self referential note:
Solution of 9Q.
A's 1 hour's work = 1/(12 ×8)
B's 1 hour's work= 1/(8×10)
(A+B)' s 1 hour's work = 1/96 + 1/80
(A+B)'s 8 hour's (or 1 day's)work = (80+96) X 8/(96×80)
Total number of days= 96×80/(80+96)×8 = 60/11 days (Ans)
can u explain me question no 5 how it becomes 125 % of 100
@@anchal________2944 No need of such confusing stuff , simply do 1/30 + 1/30 * 25% . You'll get answer in 1 step
Best thing is : THIS IS VERY EASY SUM.
Quite motivates me to learn more. Thank you Carrer ride
Simply invert😊😊😍
Your teaching helped me alot since I was struggling to memorize formulas. I am now able to solve questions easily. Thanks a million.
This lecture is simply superb it was so much better than coaching aptitude lectures
Sir ....I like ur way of teaching
All the concepts are made clear
And it makes me more confident
Thanku sir!!😊
You're welcome, Apurva. Please subscribe the channel for more career related videos and stay connected :)
Thank you so much for making it easy for me !
thanks man. never realized time and work questions are not that difficult
Completely cleared all the doubts thank u so much sir for ur clear explanation.
question number 2 simplified
24 man= 10 days
1 man= 24*10=240
30 man=240/30= 8
so 30 man will complete work in 8 days
Please provide simple trick for q 8
PV&CCC✔
Positive Vibes .Content Concept Clarity within few seconds, what a combo indeed!
After watching your videos now I have more confident
Thank you so much sir
Love from GUJARAT
BEST VIDEO ON TIME AND WORK...Hats off to the explanation 👌👍
Last question - more simple solution
:- total work in 1 day = 7/96.
~ 7/96work*x days =1(total work)
~ x= 13.7 😎😎
WOWWW
your comment must got 1k likes but the fact is u got only 1 like of me
THAAAAAAANK YOUUUUUUUUUUUUUU
May i know how u got total work in 1 day as 7/96
@@ramyapeko219
Raj work -> 16 days -> 1/16 work/day
Suraj work -> 12 days -> 1/12 work/day
They work on alternate days
So for 2 days work done = Raj's 1 day work + Suraj's 1 day work
= 1/16 + 1/12
2 days work = 7/48
Total work to be done is 1.
Therefore for 2 days -> 7/48
so for ? days -> 1 i.e. completing the work
by simply cross multiplying
? days = (2 x 1)/(7/48)
? days = 13.7 days
@@GokulM28 Thank u
Thanks Tejas bro you are genius
Simplyyyyyyyyyyyyyyyyyyyyyyyyyy Invert
😁
@@sonalichaudhury8922 🧐🧐🙄🙄 placements ki preparation chal rhi hai 🤔
I have never seen such kind of great video. you have cleared my doubt in such 14 min.. you are great..plz try to cover all topic
After months of searching for good aptitude videos, found this perfect channel !!
Who is watching in 2024
9th question can be done in a simpler way. I got the same ans doing less calculation.
A's one day work = 1/12 [8hrs per day]
B's one day work = 1/8 [10hrs per day]
if 1/8 work is done in 10 hrs, the amount of work done in 8 hours will be 1/10
now we have both A and B 8 hrs work per day
1/12 + 1/10 = 11/60(one day's work together)
total time taken = 60/11 days
WOWWWWWW...U R GR8
Is this samples are relevant for campusing?
How did u get B's work for 8 hours as 1/10?
@@SkAlhtar Yes, trust me when I say this, at first you will question the relevance but in the long term they really help you build a good concept.
Shortcuts in aptitude are pleasant to watch and tough to learn.
All the best.
@@Bug_Hunt at first B's 1 hour work will be 1/(8*10) =1/80 then we need to find B's 8 hours work will be 1/80 * 8 = 8/80 = 1/10.
Hope this helps, this chapter sometimes requires some out of the way calculations and tricks.
All the best.
It's a really very good video.Simple and easy.
Thank you.
what an explanation sir...
you are a fabulous teacher.
Thank you for these videos!
That was an extraordinary video! I understood time and work precisely!! Thank u
Hi hari hru
Whenever I listen that easy word before starting a sum it boosts up my confidence level thank you sir..
thank you very much..keep up the good work sir
Thank U so much for your kindness,Sir. May God blessed u.
guys remember:
"SIMPLY INVERT"
Thank you so much Sir💓
Your way of solving problems is awesome
Thx for making video for novice like us!
simply THE BEST!!!
6th question... If 4 boys work 1/6 a day... Then 40boys that is 4*10 boys will work 10*(1/6) a day ! simple.
Thank you so much for the amazing explanations and tricks. Now I can easily solve this type of problems of work and time :)
first i saw your video and then i went to other channel for refrence. other channel also thought nicely but their method was time consuming and your time saving. thank you for making this videi
Please make video on set theorey , way of teaching in careerride is excellent. Thank you
Q)9) 1day work(A)=1/12
1 hr work of 8hrs=1/12*8
1day work(B)=1/8
1 hr work of 10hrs=1/8*10
Total 8hrs working of A and B in oneday=8/12*8 + 8/8*10 =11/60,. Invert. So ans=60/11
I was struggling so much in this chapter after hearing this video it was very easy to solve work and time problems and cracked an exam real easily......thank you so much sir!!!
Simply Great! Thank You!
Please post the video of data interpretation, pie chart
Juuuussst invert
i was thinking it was complicated but you made it easy for me
Thank you very much sir this video more worth and covered different types of problems
Nice Video.Keep it up.I Simplyyyy inverted the subscribe button to subscribed 😂😂😂😂
For 36:12 Mt thought process is..
Let Raj takes x days and Suraj takes y days while working at alternative days.
X/16 + Y/12 = 1
Simplifying...
3X + 4Y = 48
Now, values of X and y must be the closest..
Half the left most value i.e. 48/2=24 as both are working alternate days...
Values of X may be 6, 7, 8 and corresponding values of y becomes 7.5, 6+3/4, 6. Closest pair is 7 and 6+3/4....
Total days = 13+ 3/4
How the corresponding values in to 7.5, 6+3/4 and 6
If we put 6 in place of X (in equation) the Y value will be equal to 7.5, similarly, other values...
thank you so much sir ur words saying easy gives us hope and we easily understand. you are really great👍👍👍👍👍👍👍 to say in a simple u r the absolutely best one☺️☺️
Thank you❗️❗️
I can't forget DST formula sir great
Baga ardham ayela cheppara bro
"simply invert.....",😃
wow , i watched more , its very good , i read many books , i watched many videos ,but watching yours , i really understand . thank you sir , really awesome .. !!
Wonderful class Sir. Thank you so much!
This channel is really best
And sir your way of teaching is awesome :-)
Thank you!
Really best vdo sir🙏 U made it soo much easier. Thank you so much ❤
I Appreciate your efforts in bringing this video
Superb .. Clearer way of explaining.. God bless
Thanks, Sara! Glad that you liked it :)
Thank you for the class sir...As usual it's been excellent! Can someone please provide the logic behind the equation which is used in Q.8.🙏
Let say p and q working together complete work in D days
Then P alone complete works in D + 25 days
& Q alone Completes work in D + 9 Days
P's 1 day work = 1/(D + 25)
Q's 1 Day work = 1/(D + 9)
P & Q Together 1 Day work = 1/D
=> 1/(D + 25) + 1/(D + 9) = 1/D
=> D(D + 9 + D + 25) = (D + 25)(D + 9)
=> 2D² + 34D = D² + 34D + 225
=> D² = 225
=> D = 15
Each and every video of yours is very helpful and can get easily understood by the simplest concepts.
Thanks, Komal!
I have to say this...THANK YOU SO MUCH, SIR.
Your videos are really useful. It really gives me confidence and motivation😊😊
Question 5..
Work Efficiency p:q = 4:5
Time efficiency= p:q=5x:4x
P can do a work in 30 days..
So 5x= 30 => x = 6...and subtitue in time effeciency
can u plz explain🙂
in the question q is more efficient than p ..so i took 100% for p for easy calculation...so p:q is 100:125 means 4:5 work
and time efficiency for p:q is 1/4x:1/5x....means 5x:4x..x is time here...5 and 4 are work part..
already we know p has done in 30 days...5x is 30 means 5x=30 so x =6...now we have to find the days took by q...so q part is 4x so 4*6=24
@@Subzero_101 thankuu ❤
Sir please have more practice sessions of Time and Distance Nd time and work..the questions that you pick helps us in getting used to with the difficulty level of them also it helps in brushing up the concept well. would really appreciate if you could have a practice sessions for such topics with maximum number of difficult questions.
Once you have learnt the concept, self practice is what you need to crack the exam. Please find the practice questions here:
www.careerride.com/online-aptitude-test.aspx
www.tutorialride.com/aptitude-questions.htm
Most valuable class sir... Please provide more videos... Thank you very much sir....
Thank you so much!
10th problem is awesome !!!
Question 7
Lcm of 20 and 25 is 100.
Efficiency of sita and Gita 5 & 4.
Gita for 10 days= 4*10.
Remaining 60 both has done.
60÷9 = 20/3....
u can do like previous model too.
How do you know efficiency...please explain
I have been coming across all, at any point I haven't felt bored, all the way it's exciting and you making tough topics, easy!! Btw Love your cliches asf!! If I would pass the aptitude part in my college placemnts, full credits goes to yu. Keep up your adorable teaching as well as admirable work.
These topics in the quantitative aptitude playlist are sufficient for placement test?
Sir you are so fantastic.More than I expect
sir i heard about the lcm method in work and time so can you make a video for this method tooo .your teaching skills can help me out.
sir, the 9th question can be done in a much more simpler manner
just by finding the one day work by A AND B in 8 and 10 hrs respectively
ie
for A
1/12 amt of work in 8hrs
for B
1/8 amt of work in 10hrs which can be found for 8hrs
so B's 8hr work will be 1/10 (using unitary method)
so now.....both have same 8hrs work
so (1/12)+(1/10)=11/60..................................total work in one day by both
so the answer would be by inverting ie......60/11....(saves lots of calculation time)
thankyou,,,
What is unitary method
Anubhav Verma Q6 can also be done by unitary method
What is unitary method can u explain it
Unitary method is nothing but cross multiply.
In this case:
B can do 1/8 amount of work in 10 hours then B can do x amount of work in 8 hours. After cross multiplying, we get
10x = 8/8 i.e. x = 1/10
Bro compare to your solution their method is more easier
A LIFE SAVER!! Thank you sirr ❤❤
THANK U SO MUCH.
SUPERB TRICKS AND EXPLANATION
VERY EASY TO UNDERSTAND AND SOLVE