Question

Abdul while driving to school computes the average speed for his trip to be 20 km per hour on his return trip along the same route there was less traffic and the average speed is 30 km per hour what is the average speed for Abdul trip.​

Answer 1

Answer:

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Answer 2

Answer:

Let x be time taken for travelling at 20 km/hr let y be time taken for travelling at 30km /hr

So 20x=30y

X=3y/2

Average speed = Total distance

/Total time

30y+30y/(y+3y/2)

=120/5

24 km/hr

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