SOLUTION: It takes 9 people 9 days to finish a project if they work 9 hours a day. If only 8 people work only 8 hours a day, how long would it take?

Question 358986: It takes 9 people 9 days to finish a project if they work 9 hours a day. If only 8 people work only 8 hours a day, how long would it take?
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
This is a problem on inverse variation. The no. of days D to finish the work is inversely proportional to the number of hours worked h and the number of people p working. Thus , where k is a proportionality constant.
, so that .
Then hours.

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