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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