# maths

8 cleaners can clean an office block in 3 hours. If two cleaners are off ill,how long will it take the rest to clean the block.

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1. this is an inverse variation, so
8/n = 6/3
6n = 24
n = 4

or

I would take 24 cleaner-hours to do the job
so with 6 cleaners, it would take 24 cleaner hours/6 cleaners = 4 hours

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2. there will be 3/4 as many cleaners, so it will take 4/3 as much time.

what is 4/3 * 3 ?

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3. thank you steve

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4. thank you reiny

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