document.write( "Question 77312: An experienced accountant can prepare a tax return in 13 hours. A novice accountant can do the job in 20 hours. How long will it take them to do the job working together? \n" ); document.write( "
Algebra.Com's Answer #55408 by stanbon(75887)\"\" \"About 
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An experienced accountant can prepare a tax return in 13 hours. A novice accountant can do the job in 20 hours. How long will it take them to do the job working together?
\n" ); document.write( "-----------
\n" ); document.write( "Exp account DATA:
\n" ); document.write( "time = 13 hr/job ; rate= 1/13 job/hr
\n" ); document.write( "------------
\n" ); document.write( "Novice account DATA:
\n" ); document.write( "time = 20 hr/job ; rate= 1/20 job/hr
\n" ); document.write( "---------------
\n" ); document.write( "Together DATA:
\n" ); document.write( "time = x hr/job ; rate = 1/x job/hr
\n" ); document.write( "-----------------
\n" ); document.write( "EQUATION:
\n" ); document.write( "rate + rate = rate together
\n" ); document.write( "1/13 + 1/20 = 1/x
\n" ); document.write( "33/260 = 1/x
\n" ); document.write( "260/33 = x
\n" ); document.write( " x= 7.88 hrs (time required working together)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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