Question

The length of a rectangle is twice that of its width. If the area of the rectangle is 72 square inches, then find the length and width.

Answer 1

Well, we should start by listing the factors

1,2,3,4,6,8,9,12,16,24,36,72

You can put these in pairs if it will help you,

1*72 2*36 3*24 4*16 6*12 8*9

If you look, you can see that in only one pair the length is twice the width.

So your answer is

W=6

L=12