hard · GMAT Quant

Three machines assemble a device in a fixed daily rotation: Machine P works Day 1, Machine Q works Day 2, Machine R works Day 3, and the cycle repeats. Machine P alone would finish the job in 8 days, Machine Q alone in 12 days, and Machine R alone in 24 days.

On which day will the assembly be completed?

  1. 13th Day
  2. 4th Day
  3. 10th Day
  4. 12th Day
  5. 11th Day

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