document.write( "Question 839510: a boat travel 6 miles upstream in the same amount of time it can travel 10 miles downstream. If the speed of the current is 2 mph, what is the speed of the boat in still water? \n" ); document.write( "

Algebra.Com's Answer #505735 by mananth(16946) $\"\"$ $\"About$

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boat speed x mph
\n" ); document.write( "current speed 2 mph
\n" ); document.write( "
\n" ); document.write( "against current x - 2 mph
\n" ); document.write( "with current x + 2 mph
\n" ); document.write( "
\n" ); document.write( "Distance against current 6
\n" ); document.write( "Distance with current 10
\n" ); document.write( "Time = same equate the time against with time with current
\n" ); document.write( "t=d/r
\n" ); document.write( "6 /(x- 2 )= 10 /(x+ 2 )
\n" ); document.write( "6 *(x+ 2 )= 10 *(x- 2 )
\n" ); document.write( "6 x + 12 = 10 x -20
\n" ); document.write( "6 x -10 x = -20 + -12
\n" ); document.write( "-4 x = -32
\n" ); document.write( "/ -4
\n" ); document.write( " x= 8 mph
\n" ); document.write( "m.ananth@hotmail.ca
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