SOLUTION: 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 th
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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. Answer by checkley75(3666) (Show Source):
You can put this solution on YOUR website! X*2X/(X+2X)
2X^2/3X
2X/3 USING 5 FOR X WE GET
2*5/3
10/3=3.33333 DAYS TO DO THE ENTIRE JOB.
THEREFORE THE WORK DONE AFTER 1 DAY IS
1/3.33333=.3 OR 30% OF THE JOB CAN BE DONE IN 1 DAY.
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