Question

A car travels a distance of 40 km at a uniform speed of 40km/h and returns back at a speed of 60km/h. Calculate the average speed of the entire journey.
(show all steps neccecary)

Answer 1

Answer:

53 1/3

Explanation:

Hope it will help .

Distance 1= 40 km/40 km/h =1 hr that is the time of distance 1.

Distance 2=40 km / 60 km/h =30 min time of distance 2.

average speed=total distance/ total time taken .

80/90 min you change the min in  fraction it will be 3/2 .

So 80 /3/2 =80 x 2/3=53 1/3