Question

The length of rectangular picture is 3 times as long as the width. If the area of the picture is 147 square inches, find the length and width of the picture.

Answer 1

l= 21 w=7

Explanation:

l=3w

147=(3w)×w

147=3w^2

49=w^2

7=w

so now we have w=7. Plug that in to find l...

l=3w

l=3×7

l=21