SOLUTION: If 2 people can clean a house in 3 hours, how long will it take 3 people to clean the house?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: If 2 people can clean a house in 3 hours, how long will it take 3 people to clean the house?      Log On


   

Question 997739: If 2 people can clean a house in 3 hours, how long will it take 3 people to clean the house?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
2 people clean 1 house in 3 hours
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1 person would take twice as long
to clean 1 house, so
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1 person cleans 1 house in 6 hours
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3 times that many people would take
1/3 of that time to clean 1 house, so
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3 people clean 1 house in 2 hours