Question

The perimeter of a photograph is 34 inches. It is 10 inches long. How wide is it?
inches

Answer 1

the width of the photo is W = 14" / 2, or 7"

Explanation:

Recall that P = 2W + 2L. Here L = 10" and P = 34".

Thus, 2(10") + 2W = 34", or

2W = 14"

Then the width of the photo is W = 14" / 2, or 7"