Question

Allison and Megan were at track practice. The track is 3/8 kilometers around.

- Allison ran 1 lap in 3 minutes.
- Megan ran 4 laps in 6 minutes.
How many minutes does it take Allison to run one kilometer?

Answer 1

Allison ran 3/8 km (0.375 km) in 3 minutes.

Set up a proportion to find how long it takes for her to run 1 km

`\frac{0.375\textrm{km}}{3 \textrm{min}} = \frac{1\textrm{km}}{x \textrm{min}}`

Cross multiply to get:

`3 = 0.375x`

Solve:

`x = (3)/(0.375)`

x = 8 minutes