Solution: How far downstream should he go if he is to return in 7/4 hours after leaving?

A man rows downstream at the rate of 5 mph and upstream at the rate of 2 mph. How far downstream should he go if he is to return in 7/4 hours after leaving?

How far downstream should he go if he is to return in 7/4 hours after leaving?

Problem Statement: ECE Board November 1998

A man rows downstream at the rate of 5 mph and upstream at the rate of 2 mph. How far downstream should he go if he is to return in 7/4 hours after leaving?

Problem Answer:

The man must rows downstream for 2.5 miles.

Solution:

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