document.write( "Question 601195: A boat can go 104mph in still water. It takes as long to go 300miles upstream as it does to go downstream 350miles. How fast is the current? \n" ); document.write( "

Algebra.Com's Answer #379641 by mananth(16946) $\"\"$ $\"About$

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Boat speed = 104 km/h
\n" ); document.write( "current speed = x km/h
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\n" ); document.write( "speed against current 104 - x
\n" ); document.write( "speed with current 104 + x
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\n" ); document.write( "Distance against current 300 km
\n" ); document.write( "Distance with current 350 km
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\n" ); document.write( "t=d/r time against = time with current
\n" ); document.write( "300 / ( 104 - x )= 350 / ( 104 + x
\n" ); document.write( "300 ( 104 + x )= 350 ( 104 -x )
\n" ); document.write( "31200 + 300 x = 36400 - -350 x
\n" ); document.write( "350 x 300 x = 36400 + -31200
\n" ); document.write( "650 x = 5200
\n" ); document.write( "/ 650
\n" ); document.write( "x = 8 km/h current speed
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\n" ); document.write( "m.ananth@hotmail.ca
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