Question

Abdul, while driving to school, computes the average speed for his trip to be 20 km h^(-1). On his return trip along the same route, there is less traffic and the average speed is 30 km h^(-1). What is the average speed for Abdul's trip ?

Answer 1

Answer:

24km/hr

Explanation:

for same distance traveled

avg speed =2× v1 × v2/(v1 + v2)

=2×20×30/(20+30)=24km/hr

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