Question

Dana's survey showed that 3 out of 8 students preferred pepperoni pizza and

1 out of 8 preferred cheese pizza. How many more of the 72 students surveyed by
Dana preferred pepperoni pizza than preferred cheese pizza?

Answer 1

18 more students preferred pepperoni pizza over cheese pizza in the survey.

Explanation:

`(3)/(8)` x
`(72)/(1)` Can be rewritten

`(3)/(1)` x
`(9)/(1)` =
`(27)/(1)` = 27 I cross canceled the 8 and 72. They have a common factor of 8. 8 goes into 8 once and 8 goes into 72 9 times.

27 students preferred pepperoni pizza.

`(1)/(8)` x
`(72)/(1)` =
`(1)/(1)` x
`(9)/(1)` = 9

9 students preferred cheese pizza.

27 - 9 = 18