2 years ago

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

Mathematics

1 answer:

Ad libitum [116K]2 years ago

5 0

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:

$x = \frac{3}{0.375}$

x = 8 minutes

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3 years ago

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You can solve this analytically to get
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but I find it just as fast to have a graphing calculator do it.

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