Question

A circular running track is 1/4 of a mile long Elena runs this track completing each lap in 1/20 of an hour what is her speed

Answer 1

The speed is equal to
`5(mi)/(h)`

Explanation:

we know that

The speed is equal to divide the distance by the time

Let

x------> the distance in miles

y-----> the time in hours

s----> the speed in mph

so

`s=(x)/(y)`

In this problem we have

`x=(1/4)\ mi`

`y=(1/20)\ h`

substitute

`s=((1/4))/((1/20))=20/4=5(mi)/(h)`