Question

A car goes from town A to town B with a speed of 30 km/h and returns back
to town A with a speed of 60 km/h. What is the average speed of the car during the complete journey.

Answer 1

Answer:

this is the answer for your question

Answer 2

Answer:

total distance =dkm

for distance d/2, time=(d/2)/30

now for another d/2, time=(d/2)/60

now average speed= total distance /totAL time

d/(d/2)/30+(d/2)/60=d/(d/40)=40kmph