document.write( "Question 71015: There are 2 copy machines. One can do a printing job in 75 minutes. If both machines print at the same time they can do the printing job in 50 minutes. How long will it take the other machine to do the printing job by itself. \n" ); document.write( "
Algebra.Com's Answer #50746 by ptaylor(2198)\"\" \"About 
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\n" ); document.write( "Machine 1 can do 1/75 of the print job per minute\r
\n" ); document.write( "\n" ); document.write( "Machine 2 can do x of the print job per minute\r
\n" ); document.write( "\n" ); document.write( "Both together can do 1/50 of the print job per minute\r
\n" ); document.write( "\n" ); document.write( "So our equation to solve is:\r
\n" ); document.write( "\n" ); document.write( "1/75+x=1/50 multiply each term by 150\r
\n" ); document.write( "\n" ); document.write( "2+150x=3 subtract 2 from both sides\r
\n" ); document.write( "\n" ); document.write( "150x+2-2=3-2
\n" ); document.write( "150x=1 divide both sides by 150
\n" ); document.write( "x=1/150 of the print job per minute or\r
\n" ); document.write( "\n" ); document.write( "Machine #2 can do the print job by itself in 150 minutes---ans\r
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\n" ); document.write( "\n" ); document.write( "Hope this helps------ptaylor\r
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