Question
A vehicle travels 60 km at 40 km/h and returns 60 km at
60 km/h. Find average speed for the whole trip.Solution
ATQ, Total distance = 120 Total time = 60/40 + 60/60 = 1.5 + 1 = 2.5 h Average speed = 120/2.5 = 48 km/h
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