document.write( "Question 77382: 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 #55499 by checkley75(3666)\"\" \"About 
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X*2X/(X+2X)
\n" ); document.write( "2X^2/3X
\n" ); document.write( "2X/3 USING 5 FOR X WE GET
\n" ); document.write( "2*5/3
\n" ); document.write( "10/3=3.33333 DAYS TO DO THE ENTIRE JOB.
\n" ); document.write( "THEREFORE THE WORK DONE AFTER 1 DAY IS
\n" ); document.write( "1/3.33333=.3 OR 30% OF THE JOB CAN BE DONE IN 1 DAY.
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