Question

If 8 tennis balls cost $24 , how much do 12 tennis balls cost?

Answer 1

12 tennis balls cost $36

Answer 2

x = 36 dollars

Explanation:

We can use a ratio to solve

8 balls 12 balls

---------- = -----------

24 dollars x dollars

Using cross products

8x = 12*24

Divide each side by 8

8x/8 = 12*24/8

x = 36 dollars