SOLUTION: Dave takes 5 days to paint a house. Jo can paint twice as fast as Dave. How many days would it have taken Jo to paint the house?

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Question 1060194: Dave takes 5 days to paint a house. Jo can paint twice as fast as Dave. How many days would it have taken Jo to paint the house?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
Dave can do 1/5 of the house in a day.
Jo can paint 2/5 of a house in a day.
It would take her 2.5 days.
Or, it takes her half as long, and half of five is 2.5 or 5/2.