Question

A bike travels at a speed of 30 km/h over a certain distance and returns over the same distance at the speed of 60 km/h. What is the average speed of the bike for the whole journey?

Answer 1

Answer:

average speed =sum of all speed /n

=90/2

=45km/h

is your answer

Answer 2

Answer:

I have attached a photo hope it helps you

Pls mark it as brainliest