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25 October, 01:03

Jane works 3 times as fast as Eleanor. If they work together they can do a job in 21 minutes. How long does it take Eleanor to do the job by herself?

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Answers (2)
  1. 25 October, 03:32
    0
    Eleanor's work 1h 24'
  2. 25 October, 04:48
    0
    1 hour and 24 min

    Step-by-step explanation:

    Jane does 3/4 job done in 21 min

    Eleanor does 1/4 job done in 21 min

    21*4=84

    60+24

    1 hour and 24 min
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