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16 February, 13:43

8 cleaners can clean an office in 3 hours, if the block needs to be cleaned in 2 hours, how many cleaners will be needed?

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  1. 16 February, 17:20
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    12 cleaners are needed

    Step-by-step explanation:

    When the no: of cleaners increases, the number of working hours will be reduced. So, this is indirect proportion.

    No of cleaners = 3 * 8 / 2 = 3 * 4 = 12

    12 cleaners are needed
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