document.write( "Question 815902: Working together, two computers can execute a program in 5 hours. Individually, the
\n" ); document.write( "older model requires 3 hours longer than the newer model to execute the program.
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Algebra.Com's Answer #491291 by josgarithmetic(39620)\"\" \"About 
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Let h = the time in hours for the new computer to do THE ONE JOB.
\n" ); document.write( "Theses numbers or expressions represent the three different work rates:
\n" ); document.write( "Old, 1/(h+3)
\n" ); document.write( "New, 1/h
\n" ); document.write( "Together, 1/5
\n" ); document.write( "Watch carefully that those rates are in jobs per hour.\r
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\n" ); document.write( "\n" ); document.write( "Old computer's rate plus New computer's rate is the rate for both computers working together.\r
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\n" ); document.write( "\n" ); document.write( "\"highlight%281%2F%28h%2B3%29%2B1%2Fh=1%2F5%29\"
\n" ); document.write( "If you solve for h, then you can also determine or compute the old computer's rate.
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