SOLUTION: In driving the usual route to school, a student computes his average speed to be 30 km/hr. In a hurry to get home that afternoon, he wants to average 60 km/hr for the round trip.
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Question 740079: In driving the usual route to school, a student computes his average speed to be 30 km/hr. In a hurry to get home that afternoon, he wants to average 60 km/hr for the round trip. What would his average speed for the return trip over the same route have to be in order to do this ? My professor said it is harder than you think! Thank you so much! Answer by lynnlo(4176) (Show Source):
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