Question

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

Answer 1

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

Answer 2

Answer:

Speed of the runner is 8.08 miles per hour approximately.

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= $4875\times\frac{1}{5280}$ miles

=>Distance = 0.9232955 miles

Converting minutes into hours:

time = 6.85 minutes

=> $6.85\times \frac{1}{60}$  hours

=> $\frac{6.85}{60}$= 0.1141667 hours.

Now, we know that, distance = speed x time  

Then, 0.9232955 miles = speed x 0.1141667 hours  

=>speed = $\frac{0.9232955}{0.1141667}$

=>speed = 8.08725749