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If one clerk can process 75 peices of mail in 2 1/ hours how long will it take 8 clerks to process 1620 peices of mail if all of them work at this same rate?

  • math -

    rate = 75pieces/2.5hours = 30 pieces/hour for each clerk
    so 8 clerks can do 240 pieces/hr

    time to do 1620 = (1620/240) hrs, or 6.75 hours

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