SOLUTION: barn painting melanie can paint a certain barn by herself in x days her helper melissa can paint the same barn by herself in 2x days writeeeee a rational expression for the fracti

Question 81833: barn painting
melanie can paint a certain barn by herself in x days her helper melissa can paint the same barn by herself in 2x days writeeeee a rational expression for the fraction of the barn that they complete in one day by working together. Evaluate the expreession for x=5
I realluy struggle with these word problem
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
melanie can paint a certain barn by herself in x days her helper melissa can paint the same barn by herself in 2x days writeeeee a rational expression for the fraction of the barn that they complete in one day by working together. Evaluate the expreession for x=5
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Melanie DATA:
Time = x days/job ; Rate = 1/x job/day
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Melissa DATA:
Time = 2x days/job ; Rate = 1/2x job/day
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Together data:
Rate = 1/x + 1/2x = (3/2x) job/day
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For x=5: In x=5 they together will do (3/10) job/day
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Cheers,
Stan H.
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