Question

Mary is running a marathon which is a total of 26 miles. She is running at a pace of 7.5 miles per hour and

has already run 8 miles. If she stays at the same pace, how much time in hours does she have left?

Answer 1

2.4 hours

Explanation:

If Mary is running 26 miles at a pace of 7.5 miles per hour, it will take her 3.47 hours to run the full course.

26/7.5 = 3.466666...

If she has run 8 miles, 1.07 hours have passed.

8/7.5 = 1.06666666...

Subtract the total time from the time that has already passed to find the time left.

3.47 - 1.07 = 2.4

Mary has 2.4 hours left.