Question

A car travels at a speed of 40 km per hour for two hours and then 60 km per hour for three hours. What is the average speed of the car during entire journey

Answer 1

speed=distance/travel time

distance=2*40+60*3

             =80+180

             =260 km

travel time=2+3=5 hrs

∴ average speed during the whole journey=260/5

                                                                  =52 km/h

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