A car drives from A to B with a uniform speed of 30 km per hour and re

1.	A car drives from A to B with a uniform speed of 30 km per hour and returns back with the speed of 20 kilometre per hour find its average speed
Answer» Explanation: Let the Distance between A and B be x Time TAKEN from A to B, t 1 = 30 x Time taken from B to A, t 2 = 20 x Total time =t 1 +t 1 = 30 x + 20 x = 60 5x AVERAGE speed = total time total distance = 60 5x x+x = 60 5x 2x =24 KMH −1

A car drives from A to B with a uniform speed of 30 km per hour and returns back with the speed of 20 kilometre per hour find its average speed

Answer»

Explanation:

Let the Distance between A and B be x

Time TAKEN from A to B, t

Time taken from B to A, t

Total time =t

AVERAGE speed =

total time

total distance

x+x

=24 KMH

−1