The perimeter of a rectangle is 96 ft. the ratio of the length to the width is 7: 5. what are the dimensions of the rectangle?

Since the perimeter is 96 ft this is for two lengths and two sides.
So the length of one side and one length is 96/2 = 48 ft

Next sum the ratios 7 + 5 = 12
Divide 48 by 12 = 4 (This s the length of '1' ratio).

So the length of 7 ratios is 7 x 4 = 28 ft
and length of 5 ratios is 5 x 4 = 20 ft.

To verify it is correct add the two lengths (20 + 28 = 48) which agrees with the length of one side and one length.

So the dimensions are 20ft x 28ft

A) 144.44 sq inches i believe