Please use Harmonic mean to solve these questions. Thanks Question1: Evan was driving up a mountainous road, with some flat stretches among the steep climbs. As a result, his speed varied for every 10...

Please use Harmonic mean to solve these questions. Thanks

Question1:
Evan was driving up a mountainous road, with some flat stretches among the steep climbs. As a result, his speed varied for every 10 kilometers, as seen below:

Distance:
 10 10 10 10 10

Speed (km/h)

10 25 6 15 8

What was his average speed throughout the drive?

Question2:Selim rides his bicycle to deliver food. Given below is his speed for each kilometer he traveled today.

Kilometer:

1st   2nd   3rd   4th   5th   6th

Speed (km/h):

3   2   6   4   4   5