document.write( "Question 767529: A motorboat takes 3 hours to travel to it's destination with a current of 5 mph. The return trip against the same current takes 4 hours. How fast is the motorboat in still water? \n" ); document.write( "
Algebra.Com's Answer #467708 by lwsshak3(11628)\"\" \"About 
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A motorboat takes 3 hours to travel to it's destination with a current of 5 mph. The return trip against the same current takes 4 hours. How fast is the motorboat in still water?
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\n" ); document.write( "let x=speed of motorboat in still water
\n" ); document.write( "x+5=speed of motorboat with the current
\n" ); document.write( "x-5=speed of motorboat against the current
\n" ); document.write( "distance=speed*travel time
\n" ); document.write( "3(x+5)=4(x-5)
\n" ); document.write( "3x+15=4x-20
\n" ); document.write( "x=35
\n" ); document.write( "How fast is the motorboat in still water? 35 mph
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