document.write( "Question 859149: Traveling down stream a boat went 15 mph traveling upstream the boat only went 4 mph find the speed of the current and the speed of the boat if there was no current \n" ); document.write( "
Algebra.Com's Answer #517588 by ewatrrr(24785)\"\" \"About 
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\n" ); document.write( "Hi,
\n" ); document.write( "Let s and c represent speed of boat and current respectively
\n" ); document.write( " s + c = 15mph
\n" ); document.write( " s - c = 4mph
\n" ); document.write( " 2s = 19
\n" ); document.write( " s = 9.5mph and current is 5.5mph
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