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3 January, 03:11

Lew and sue agree on a schedule for cleaning their rooms. Lew will clean once every 3 days and Sue will clean once every 5 days. They both clean their rooms on Saturday April 1. What is the next date they will clean on the same day?

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Answers (2)
  1. 3 January, 03:30
    0
    One way to do this is to do trial and error so

    days that sue cleans (multiples of 3) : 3,6,9,12,15,18,21, 24,27,30 ...

    days that lew cleans (multiples of 5) : 5,10,15,20,25,30 ...

    so they both clean on 15th day or april 15
  2. 3 January, 03:32
    0
    They will clean together on april 15th.
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