Question

Kevin used to run a mile in 9.4

minutes. Now he can run a mile in 8.2
minutes. What is the percent change?

Answer 1

12.77%

Explanation:

if a 100% is 9.4

then do

8.2/9.4

which is

0.87234042553

which is

87.23%

then do

100% - 87.23%

which is

12.77%