Question

The length of side Y is?

Answer 1

160

Explanation:

Make a proportion with the corresponding sides

`(35)/(140)` =
`(40)/(y)`

`(35)/(140)` simplifies to
`(1)/(4)` You do not have to simplify, but these are more manageable numbers.

`(1)/(4)` =
`(40)/(y)` I can see that if I multiple the numerator of the first fraction by 40, I will get the numerator of the second fraction. So, I will multiply the denominator of the first fraction (4) with 40 to get x.

4(40) = 160