document.write( "Question 976921: A cruise boat travels 36 miles downstream in 4 hours and returns to its starting point upstream in 12 hours. Find the speed of the stream. \n" ); document.write( "
Algebra.Com's Answer #598400 by FrankM(1040)\"\" \"About 
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Downstream, the boat goes 9mph
\n" ); document.write( "Upstream, it goes 3mph\r
\n" ); document.write( "\n" ); document.write( "On its own, the boat goes 6mph in still water, with the water moving at 3mph.
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