Question

The ratio of the perimeters of two rectangles is 5 to 8. The perimeter of the larger rectangle is 72 inches. What is the perimeter of the smaller rectangle?

A.
115.2 inches

B.
45 inches

C.
40 inches

D.
16.4 inches

@kkbrookly

Answer 1

You set this one up as a proportion as well. If the ratio is 5 to 8 then you set up the fraction 5/8. Since you don't know the perimeter of the smaller triangle, but you know the bigger one, the second fraction would be x over 72. Then you cross multiple and divide.

Answer 2

i got 45

Answer 3

So B is the answer

Answer 4

can i have a medal plz?

Answer 5

45 is correct.