<PRE><B>Question 1069573</B>
Bill rows his boat at 10 miles per hour. He rowed 20 miles down a stream and then rowed back to his starting point the stream is flowing at 2 mikes per hour how many hours and minutes did it take him.
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Downstream::
dist = 20 miles ; rate = 10+2 mph ; time = 20/12 = 1 2/3 hrs
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Upstream::
dist = 20 miles ; rate = 10-2 mph ; time = 20/8 = 2 1/2 hrs
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Ans: 5/3 + 5/2 = (10+15)/6 = 25/6 = 4 1/6 hrs = 4*60+10 = 250 minutes
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Cheers,
Stan H.
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