document.write( "Question 601587: If a boat goes downstream 72 miles in 3 hours and upstream 60 miles in 6 hours, the rate of the river and the rate of the boat in still water respectively are ________? \n" ); document.write( "

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If a boat goes downstream 72 miles in 3 hours and upstream 60 miles in 6 hours, the rate of the river and the rate of the boat in still water
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\n" ); document.write( "Speed d/s = 72/3 = 24 mi/hr
\n" ); document.write( "Speed u/s = 60/6 = 10 mi/hr
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\n" ); document.write( "The boat's speed is the average = 17 mi/hr
\n" ); document.write( "The current is the difference = 7 mi/hr \n" ); document.write( "

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