document.write( "Question 251435: Heidi can type a manuscript in 8 hours. Working together it takes Heidi and Dolores 5 hours to do the same job. How long would it take Dolores to type the manuscript by herself? \n" ); document.write( "
Algebra.Com's Answer #183111 by stanbon(75887)\"\" \"About 
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Heidi can type a manuscript in 8 hours. Working together it takes Heidi and Dolores 5 hours to do the same job. How long would it take Dolores to type the manuscript by herself?
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\n" ); document.write( "Heidi DATA:
\n" ); document.write( "time = 8 hrs/job ; rate = 1/8 job/hr
\n" ); document.write( "-----------------------
\n" ); document.write( "Together DATA:
\n" ); document.write( "time = 5 hrs/job ; rate = 1/5 job/hr
\n" ); document.write( "-----------------------
\n" ); document.write( "Dolores DATA:
\n" ); document.write( "time = x hrs/job ; rate = 1/x job/hr
\n" ); document.write( "--------------------------------
\n" ); document.write( "Equation:
\n" ); document.write( "rate + rate = together rate
\n" ); document.write( "1/8 + 1/x = 1/5
\n" ); document.write( "Multiply thru by 40x to get:
\n" ); document.write( "5x + 40 = 8x
\n" ); document.write( "3x = 40
\n" ); document.write( "x = 13 1/3 hrs (time for Dolores to do the job alone)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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