document.write( "Question 151833: The excursion boat on the river takes 2½ hours to make the trip to a point 12 miles upstream and to return. If the rate at which the boat travels in still water is 5 times the rate of the river current, what is the rate of the current? \n" ); document.write( "
Algebra.Com's Answer #111624 by checkley77(12844)\"\" \"About 
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12/6X+12/4X=2.5
\n" ); document.write( "(12*2+12*3)/12X=2.5
\n" ); document.write( "(24+36)/12X=2.5
\n" ); document.write( "60=2.5*12X
\n" ); document.write( "60=30X
\n" ); document.write( "X=60/30
\n" ); document.write( "X=2 MPH ANSWER FOR THE CURRENT.
\n" ); document.write( "PROOF:
\n" ); document.write( "12/(6*2)+12/(4*2)=2.5
\n" ); document.write( "12/12+12/8=2.5
\n" ); document.write( "1+1.5=2.5
\n" ); document.write( "2.5=2.5
\n" ); document.write( "
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