Question

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

Answer 1

Answer:

Elena's running speed is 5 miles/hour

Explanation:

The speed is defined as the covered distance per unit time

In the problem, we have:

The distance covered is the length (circumference) of the circular track which is given as $\frac{1}{4}$ of a mile.

We are also given that she completes each lap (she completes $\frac{1}{4}$ of a mile) in $\frac{1}{20}$ of an hour

To get her speed, we will divide the distance covered by the time taken to cover this distance

This is done as follows:

speed = $\frac{\frac{1}{4} }{\frac{1}{20} } = 5$ miles/hour

This means that:

Elena can run 5 miles each hour

Hope this helps :)