SOLUTION: 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 min
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Question 1069573: 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 Found 2 solutions by ikleyn, stanbon:Answer by ikleyn(52775) (Show Source):
You can put this solution on YOUR website! .
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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Bill's speed traveling downstream is 10 + 2 = 12 miles per hour.
So, it took
= = of an hour = 1 hour and 40 minutes
to row 20 miles downstream.
Bill's speed traveling upstream is 10 - 2 = 8 miles per hour.
So, it took
= = of an hour = 2 hours and 30 minutes
to row 20 miles upstream.
The entire round trip took 4 hours and 10 minutes.
You can put this solution on YOUR website! 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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