Question

A runner travels 3.0 kilometers in 24 minutes, then another 2.5 kilometers in 27 minutes, and finally 1.2 kilometers in 15 minutes. What is the runner's average speed? *

Answer 1

Answer :-

The average speed of the runner is 0.10km/min.

Step-by-step explanation:

To Find :-

• The average speed of the runner.

★ Solution

Given that,

Distance covered and time taken by a runner :-

• 3.0km in 24 mins, then another
• 2.5km in 27 mins, and finally
• 1.2km in 15 mins.

∴ The total distance and time taken by the runner :-

Total distance covered:-

⇒ 3.0km + 2.5km + 1.2km

⇒ 6.7km

Total time taken:-

⇒ 24mins + 27mins + 15mins

⇒ 66mins

Now, According the question,

• The average speed is :-

We know,

Average speed = Total distance/Total time.

⇒ 6.7km/66mins

⇒ 0.10km/min

Hence, The average speed of runner is 0.10km/min.