Alligation alternate in easy way - 4 Components

[@sheikmohamedamanulaa3898]

40:10 should it be 1: 2 or 2:1

[@egpat]

It is 2:1

[@jeannettewilke205]

How would this work with an uneven number of components?

[@egpat]

Here is an an example to deal with 3 components. ua-cam.com/video/YX1yNl5yfe0/v-deo.html