Question
A cyclist covered a distance in two parts: first 1.5 hours
at 32 km/h and then 2.5 hours at 48 km/h. What was the average speed for the complete journey?Solution
ATQ,
Total distance travelled by the cyclist = 32 × 1.5 + 48 × 2.5 = 48 + 120 = 168 km
Total time taken = 1.5 + 2.5 = 4 hours
So, average speed = total distance travelled ÷ total time taken = 168 ÷ 4 = 42 km/h
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