SOLUTION: It takes 15 people 8 hours to clean a restaurant, how long would it take 20 people to clean the same restaurant.

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Question 773380: It takes 15 people 8 hours to clean a restaurant, how long would it take 20 people to clean the same restaurant.
Answer by Edwin McCravy(20054) About Me  (Show Source):
You can put this solution on YOUR website!
The more people, the fewer hours.  Therefore people and time are
inversely proportional

Fewer people   Fewer hours 
------------ = -----------
 More people    More hours

      15          x
     ----   =    ---  
      20          8

      20x   =    120

        x   =    6

6 hours.

Edwin