SOLUTION: The number of days it takes to build a house is inversely proportional to the number of people helping to build it. If it takes 10 people 40 days to build the house, how long will

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Question 966484: The number of days it takes to build a house is inversely proportional to the number of people helping to build it. If it takes 10 people 40 days to build the house, how long will it takes 8 people to build the house?
Answer by ikleyn(52810) About Me  (Show Source):
You can put this solution on YOUR website!

According to the condition,  the product   (number of workers) x (duration of construction in days) = constant,   is the constant value.

Therefore, you can solve the problem as follows.

It takes  10 people x 40 days = 400 people-days to build the house.

Hence,  8  people can build the house in  400%2F8 = 50 days.