Question

A circular running track is 1/4 mile long. Elena runs on this track, completing each lap in 1/20 of an hour. What is her speed? Include the unit of measure

Answer 1

Her speed is 5 miles per hour.

Explanation:

The formula of the speed is given by:

`v = (d)/(t)`

In which d is the distance, and t is the time.

In this question:

Distance: 1/4 mile = 0.25 miles.

Time: 1/20 hour = 0.05 hours.

So

`v = (d)/(t) = (0.25)/(0.05) = 5`

Since the distance is in miles and the time in hours, the speed is in miles per hour.

Her speed is 5 miles per hour.