document.write( "Question 796665: the speed of a stream is 2 mph. A boat travels 6 miles upstream in the same time it takes to travel 10 miles downstream. What is the speed of the boat in still water?\r
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Algebra.Com's Answer #481481 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! the speed of a stream is 2 mph. A boat travels 6 miles upstream in the same time it takes to travel 10 miles downstream. What is the speed of the boat in still water? \n" ); document.write( "*** \n" ); document.write( "let x=speed of boat in still water \n" ); document.write( "x+2=speed of boat downstream \n" ); document.write( "x-2=speed of boat upstream \n" ); document.write( "travel time=distance/speed (same for both directions) \n" ); document.write( ".. \n" ); document.write( " \n" ); document.write( "6(x+2)=10(x-2) \n" ); document.write( "6x+12=10x-20 \n" ); document.write( "4x=32 \n" ); document.write( "x=8 \n" ); document.write( "speed of boat in still water=8 mph\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |