document.write( "Question 668427: a boat takes 3 hours to travel 30 km down a river, then 5 hours to return. how fast is the river flowing? \n" ); document.write( "

Algebra.Com's Answer #415536 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi,
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document.write( "a boat takes 3 hours to travel 30 km down a river, 
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document.write( "then 5 hours to return. how fast is the river flowing?
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document.write( "Note:  D/t = r
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document.write( " r + c = 10  
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document.write( " r - c = 6   
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document.write( " 2r = 16
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document.write( "  r = 8   and c = 2kmph, how fast the river is flowing \n" );
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