SOLUTION: A homeowner estimates that it will take her 9 days to roof her house. A professional roofer estimates that he could roof the house in 4 days. How long will it take if the homeowner
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Question 926630: A homeowner estimates that it will take her 9 days to roof her house. A professional roofer estimates that he could roof the house in 4 days. How long will it take if the homeowner helps the roofer? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! A homeowner estimates that it will take her 9 days to roof her house. A professional roofer estimates that he could roof the house in 4 days. How long will it take if the homeowner helps the roofer?
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The owner does 1/9 of the roof per day.
The roofer does 1/4 of the roof per day.
Can you do the rest?
