SOLUTION: 90.) solve each problem 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. Write a rational

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Question 164325This question is from textbook Elementary and Intermediate
: 90.) solve each problem
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. Write a rational expression for the fractions of the barn that they complete in one day by working together. Evaluate the expression for x = 5. This question is from textbook Elementary and Intermediate

Answer by ankor@dixie-net.com(22740) About Me  (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. Write a rational expression for the
fractions of the barn that they complete in one day by working together.
:
Mela: 1%2Fx
Meli: 1%2F%282x%29
:
1%2Fx + 1%2F%282x%29
:
Evaluate the expression for x = 5.
:
1%2F5 + 1%2F10 = 3%2F10 of the job done in 1 day together