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22 July, 00:32

one custodian cleans a suite of offices in 9 hours when a second worker is asked to join the regular custodian the job takes only four and a half hours how long does it take the second worker to do the same job alone

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Answers (2)
  1. 22 July, 01:47
    0
    9 hours

    Step-by-step explanation:

    9 hours by one custodian divided by 2 custodians equals 4.5

    4.5 x 2 = 9
  2. 22 July, 02:29
    0
    9 hours is the answer.
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