Question

Roberto made a 74 on last week's math quiz. This week he made an 85 on

the quiz. Which best describes the percent of increase in his score.

Answer 1

His quiz score increased by about 7%.

Explanation:

Take the two quiz scores and add them together to get 159.

Take the difference between the two quiz scores to get 11.

Divide the difference by the sum to get 0.0692 or about 7%.