document.write( "Question 177414: Melanie can paint a certain barn by herself in x days. Her helper 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. \n" ); document.write( "

Algebra.Com's Answer #132441 by Mathtut(3670) $\"\"$ $\"About$

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melanie can paint 1/x of the barn per day
\n" ); document.write( "melissa can paint 1/2x of the barn per day
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\n" ); document.write( "together they can do
\n" ); document.write( ":
\n" ); document.write( "a) $\"%281%2Fx%29%2B%281%2F2x%29\"$ per day
\n" ); document.write( ":
\n" ); document.write( " $\"%282%2F2x%29%2B%281%2F2x%29=3%2F2x\"$ per day
\n" ); document.write( ":
\n" ); document.write( "b) $\"3%2F2%285%29=3%2F10\"$ \n" ); document.write( "

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