Question

Can you please help?

Answer 1

6.5 km per minute

Explanation:

To calculate the average speed, you add the speed of one trip to the speed of the other then divide by 2.

The first trip was a speed of 80km/10 minutes or 8km per 1 minute.

The second trip was a speed of 100km/20 minutes or 5km per 1 minute.

To find the average, add and divide by 2:

`(8+5)/(2)=(13)/(2)=6.5` km per minute