Question

A runner runs 4875 ft in 6.85 minutes. what is the runners average speed in miles per hour?

Answer 1

Speed of the runner is 8.08 miles per hour approximately.

Step-by-step explanation:

Given:

A runner runs =4875 ft

Time Taken = 6.85 minutes.

To Find:

Average speed of the runner in miles per hour=?

Solution:

Distance = Speed x time

Conveting feet into miles:

=>Distance=
`4875*(1)/(5280)` miles

=>Distance = 0.9232955 miles

Converting minutes into hours:

time = 6.85 minutes

=>
`6.85* (1)/(60)` hours

=>
`(6.85)/(60)`= 0.1141667 hours.

Now, we know that, distance = speed x time

Then, 0.9232955 miles = speed x 0.1141667 hours

=>speed =
`(0.9232955)/(0.1141667)`

=>speed = 8.08725749

Answer 2

The average speed can be easily calculated by taking the ratio of distance and time. That is:

average speed = distance / time

so calculating:

average speed = 4875 ft / 6.85 minutes

average speed = 711.68 ft / min