Question

the runner's time to complete the marathon is 45 minutes. The time to complete the last marathon was 49.5 minutes. What is the percent decrease of the time ?

Answer 1

9.09%

Explanation:

To find percent decrease you have to use this equation:

`Percent Decrease = (Initial -New)/(Initial) x 100`

Initial = 49.5

New = 45

Plug in and solve:

`PD = (49.5-45)/(49.5) x 100\\\\PD = (4.5)/(49.5) x 100 \\\\PD = 0.0909 x 100\\\\PD = 9.09`

The percent decrease is 9.09%

Hope this helps!!

- Kay :)