Question

the ratio of the length of a rectangle to its width is 8 to 5. if the longer side of the rectangle is 20 ft, what is the length of its shorter side?

Answer 1

length is 20

ratio is 8:5

20:?=8:5
20/?=8/5
times both sides by 5?
100=8?
divide both sides by 8
25/2=?
12.5=?

the shorter side is 12.5ft

Answer 2

8/5 = 20/x
8x = 20(5)
8x = 100
x = 12.5

answer
length of its shorter side = 12.5 ft