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Question 741242: A hotel has 120 rooms.
It takes 6 cleaners 4 hours to clean them all.
How many cleaners would it take to clean all the rooms in 3 hours?
Thanks:)
Answer by josmiceli(19441)   (Show Source):
You can put this solution on YOUR website! The problem only talks about cleaning 120
rooms, so that can be called 1 job
So, I can say:
6 cleaners do 1 job in 4 hrs
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1/3 the number of cleaners will take 3 times as long
to do the job, so
2 cleaners can do 1 job in 12 hrs
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4 times that number of cleaners will take 1/4 that time
to do 1 job, so
8 cleaners can clean 120 rooms ( 1 job ) in 3 hrs
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