document.write( "Question 1058033: a motorboat can travel 15 kph downstream and 9 kph upstream on a certain river. Find the rate of its current and the rate at which the boat can travel in still water. \n" ); document.write( "
Algebra.Com's Answer #673074 by Alan3354(69443)\"\" \"About 
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a motorboat can travel 15 kph downstream and 9 kph upstream on a certain river.
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\n" ); document.write( "Find the rate at which the boat can travel in still water.
\n" ); document.write( "(15+9)/2 = 12 km/hr
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\n" ); document.write( "Find the rate of its current
\n" ); document.write( "15 - 12 = 3 km/hr
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