Question

A car travels a distance from a to b at a speed of 60 km/h and returns to a at a speed of 30 km/h what is the average speed of the whole journey.

Answer 1

Answer:

A person travels 1/3 part of his journey at 20 km/h and remaining distance at 30 km/h.

Answer 2

Answer:

45km/h

Explanation:

total distance÷total time

60+30÷1+1

90÷2

45