Question

a bus travels a distance of 120 km with a speed of 40km/h and returns with a speed of 40km/h.calculate the average speed for the entire journey. ​

Answer 1

Answer:

case-1

D = 120 km

s = 40km/h

t = D/s

= 120/40

= 3 h

case-2

s = 40 km/h

D =120 km

t = D/s

= 120/40

= 3 h

total distance = 240 km

total time = 6 h

average speed = total distance/total time

= 240/6

= 40 km/h

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