Question

Kate thought she could only run for 12 minutes, but she actually ran for 25 minutes. What is the percent error?

Answer 1

`108(1)/(3)` %

Explanation:

`(25)/(12) :(y)/(100)`

12 · y = 25 · 100

12y = 2500

12y ÷ 12 = 2500 ÷ 12

`y=208(1)/(3)`

`208(1)/(3) - 100 = 108(1)/(3)`