Question

A runner wants to run 10.4 km . She knows that her running pace is 7.6 mi/h .

Answer 1

Answer:

The runner should run 51 minutes.

Explanation:

Distance wished by runner to cover = d = 10.4 km

Time taken by the runner to cover 10.4 km = T

Speed of the runner  = 7.6 mile/hour

1 mile = 1.60934 km

1 hour = 60 min

$7.6 mile/Hour=\frac{7.6\times 1.60934 km}{1\times 60 min}=0.2038 km/min$

$Speed=\frac{Distance}{Time}$

$T=\frac{10.4 km}{0.2038 km/min}=51.0179 min\approx 51 minutes$

The runner should run 51 minutes.