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If one clerk can process 75 pieces of mail in 2 and 1/2 hours, how long will it take eight clerks to process 1620 pieces of mail if all of them work at this same rate?

  • math -

    75/2.5 = 30

    Each clerk can process 30 pieces of mail in an hour.

    1620 / (8 * 30) = 6.75 hours

  • math -

    81 hours

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