SOLUTION: Harry can paint a house by himself in 6 days. His wife judy can paint the house by herself in x days. Write a rational expression F(x) that gives the portion of the house that they

Question 365291: Harry can paint a house by himself in 6 days. His wife judy can paint the house by herself in x days. Write a rational expression F(x) that gives the portion of the house that they paint when working together for 2 days.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
If you add Harry's rate of working and Judy's rate of working,
you get their rate working together
given:
Harry's rate:
(1 house)/(6 days) =
Judy's rate:
(1 house)/(x days) =

This says that, working together, they can paint
houses in days
Or, what is the same thing, houses in 1 day
So, they will paint houses in 2 days

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