document.write( "Question 285536: I need help figuring out this problem:\r
\n" ); document.write( "\n" ); document.write( "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.\r
\n" ); document.write( "\n" ); document.write( "would it be written as 2x+5x \n" ); document.write( "
Algebra.Com's Answer #206971 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
r/x+r/2x=1
\n" ); document.write( "2r+r=2x
\n" ); document.write( "3r=2x
\n" ); document.write( "r=2x/3
\n" ); document.write( "in one day they can do 3/(2x)
\n" ); document.write( "It takes them r days working together.\r
\n" ); document.write( "\n" ); document.write( "3r/2=x
\n" ); document.write( "3r=2x
\n" ); document.write( "if x=5
\n" ); document.write( "r/5+r/10=1
\n" ); document.write( "2r+r=10
\n" ); document.write( "3r=10
\n" ); document.write( "r=10/3 =3 1/3 days
\n" ); document.write( "if one can do it in 5 days the other in 10 days together they can do it in 3 1/3 days\r
\n" ); document.write( "\n" ); document.write( "in one day one does 1/5 and the other 1/10\r
\n" ); document.write( "\n" ); document.write( "2/10+1/10 they can do 3/10 in one day working together.\r
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