document.write( "Question 890652: A motorboat takes 5 hours to travel 150 km going upstream. The return trip takes 3 hours going downstream. What is the rate of the boat in still water and what is the rate of the current? \n" ); document.write( "

Algebra.Com's Answer #539186 by josgarithmetic(39617) $\"\"$ $\"About$

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r, boat speed in absence of any current
\n" ); document.write( "c, speed of current\r
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\n" ); document.write( "\n" ); document.write( "_______________speed________time________distance
\n" ); document.write( "upstream_______r-c__________5___________150
\n" ); document.write( "downstream_____r+c__________3___________150\r
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\n" ); document.write( "\n" ); document.write( "SYSTEM OF EQUATIONS
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\n" ); document.write( " $\"highlight_green%28%28r-c%29%2A5=150%29\"$
\n" ); document.write( " $\"highlight_green%28%28r%2Bc%29%2A3=150%29\"$
\n" ); document.write( "---------------------------\r
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\n" ); document.write( "\n" ); document.write( "Those are two simultaneous linear equations.
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