document.write( "Question 209604: Melanie can paint a certain barn by herself in \"x\" days. Melissa can paint the same barn by herself in 2x days. Write a rational expression for the fration of the barn that they complete in one day by working together. Evaluate the expression for x=5. \n" ); document.write( "
Algebra.Com's Answer #158475 by stanbon(75887)\"\" \"About 
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Melanie can paint a certain barn by herself in \"x\" days. Melissa can paint the same barn by herself in 2x days. Write a rational expression for the fraction of the barn that they complete in one day by working together. Evaluate the expression for x=5.
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\n" ); document.write( "Melanie DATA:
\n" ); document.write( "time = x day/job ; rate = 1/x job/day
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\n" ); document.write( "Melissa DATA:
\n" ); document.write( "time = 2x day/job ; rate = 1/2x job/day
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\n" ); document.write( "Together DATA:
\n" ); document.write( "rate + rate = together rate
\n" ); document.write( "1/x + 1/2x = (2x+x)/2x^2 = 3x/2x^2 = 3/2x job/day
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "Reply to comcast.net
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