SOLUTION: The number o 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 i

Algebra ->  Rate-of-work-word-problems -> SOLUTION: The number o 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 i      Log On


   

Question 966482: The number o 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 josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
t, days to build house
n, how many workers
k, variation constant

t=k%2Fn
k=tn

From first sentence description,
k=40%2A10
k=400

Expect variation equation, t=400%2Fn.

Eight people helping?
t=400%2F8
highlight%28t=50%29 days.