Question 1069573
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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 

{{{20/12}}} = {{{1}}} {{{8/12}}} = {{{1}}} {{{2/3}}} 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 

{{{20/8}}} = {{{2}}} {{{4/8}}} = {{{2}}} {{{1/2}}} of an hour = 2 hours and 30 minutes

to row 20 miles upstream.



The entire round trip took 4 hours and 10 minutes.
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