Question

A band that usually plays for 60 minutes

played for 75 minutes. What was the
percent of increase in the time played?
A. 15%
B. 20%
C. 25%
D. 30%

Answer 1

C. 25%

Explanation:

percent change = (new number - old number)/(old number) * 100%

The new number is the increased time, 75 minutes, and the old number is the original time, 60 minutes.

percent change = (75 min - 60 min)/(60 min) * 100%

percent change = (15 min)/(60 min) * 100%

percent change = 0.25 * 100%

percent change = 25%

Since the percent change is a positive number, it is a percent increase.

The percent increase was 25%.

Answer: C. 25%