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?
Please explain me this question with solution.
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average speed is equal to
total distance/total time taken
20+30/2
25 is ans
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