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Source: GWD

Level: 0

Working at their respective constant rates, machine A makes 100 copies in 12 minutes and machine B makes 150 copies in 10 minutes. If these machines work simultaneously at their respective rates for 30 minutes, what is the total number of copies that they will produce?

  • A 250
  • B 425
  • C 675
  • D 700
  • E 750

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