Question

Maggie ran 9 miles at x minutes per mile.She also walked for 20 minutes.If she exercised for a total of 125 minutes,write an equation that can be used to determine how long it took her to run one mile

Answer 1

x = (total exercise time - walking time) / number of miles run

Explanation:

Let the time it took Maggie to run a mile = x ( already given)

x = distance ran / running speed

• Total time the whole exercise took = 125 minutes.
• Total time spent walking = 25 minutes

Total time it took her to run 9 miles can be obtained by subtracting the time she spent walking from the total exercise time.

125 - 25 = 100 minutes.

Therefore, it took Maggie 100 minutes to run 9 miles

We can set up a linear relationship as shown:

9 miles took 100 minutes

1 mile will take x minutes

x = 100 / 9 minutes.

However, the question asked us to write an equation to show this process.

We simply recap the processes in a mathematical form:

x = (total exercise time - walking time) / number of miles run