document.write( "Question 273063: It took a boat 5 hours to travel upstream and back. The current was 3mi/hr and the return trip took 1 hour. What is the speed of the boat in still water? \n" ); document.write( "
Algebra.Com's Answer #199537 by stanbon(75887)\"\" \"About 
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It took a boat 5 hours to travel upstream and back. The current was 3mi/hr and the return trip took 1 hour. What is the speed of the boat in still water?
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\n" ); document.write( "Upstream DATA:
\n" ); document.write( "time = 4 hrs ; rate = b-3 mph ; distance = rt = 4(b-3) miles
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\n" ); document.write( "Downstream DATA:
\n" ); document.write( "time = 1 hr ; rate = b+3 mph ; distance = rt = b+3 miles
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\n" ); document.write( "Equation:
\n" ); document.write( "distance = distance:
\n" ); document.write( "4(b-3) = b+3
\n" ); document.write( "4b-12 = b+3
\n" ); document.write( "3b = 15
\n" ); document.write( "b = 5 mph (boat speed in still water)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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