Question

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Rachel decided to have bouncy balls as a party favor. She determines that her ratio of bouncy balls to guests is 9:3. Explain how to find the number of balls needed for 30 guests.

Answer 1

90 bouncy balls. The simplified ratio would be 3:1. You have to multiply the ratio by 30 because there are 30 guests. 3 balls per guest makes 90 bouncy balls.

Answer 2

bouncy balls to guests = 9:3 so every 3 guests you need 9 bouncy balls so if you have 30 guests you simply take

9 x 10 = 90 bouncy ball