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11 June, 04:01

Problem PageQuestion There are dishes that need to be rinsed. Reuben can rinse them in minutes by himself. It will take his friend Tony minutes to rinse these dishes. How long will it take them if they rinse these dishes together?

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Answers (2)
  1. 11 June, 04:16
    0
    (More than minutes + a minutes) / 2

    Explanation:

    From the two questions, 2 people are involved, Reuben and tony, if it takes Reuben 1 minutes to wash the dishes and mite than a minute to wash by tony. The arithmetic is the addition of both time and divided by the number of people involved.

    I. e (the number of minutes for Reuben + number of minutes by tony) / 2.
  2. 11 June, 04:27
    0
    Answer: it will take a fewer minutes less than both the minutes Reuben and Tony will use.

    Explanation:

    If Reuben can do 630 dishes in 105 minutes. Therefore he would wash 630/105 dishes in 1 minute.

    And if Tony can do 630 dishes in 70 minutes. Therefore, he would wash 630/70 dishes in 1 minute.

    That means that if they wash the dishes together, every minute would mean that they would be able to wash (630/105) + (630/70) = 15 dishes in 1 minute.

    Since there are 630 dishes to be washed, they would take together

    630/15=42 minutes
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