Two computers take 10 minutes. Slow computer takes 50. How long does fast computer take?

Two computers take 10 minutes to send an email. The slower of the two takes 50 minutes by itself. How long would it take the fast computer by itself.

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One Response to “Two computers take 10 minutes. Slow computer takes 50. How long does fast computer take?”

  1. A said:

    i would guess 8 minutes because a computer takes 20 minutes and a slow takes 50 the difference between them is 5/2 so 20 x 2/5 (flip fraction to divide by it) = 8




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