GMAT Problem Solving

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Source: GWD

Level: 4

Running at their respective constant rates, machine X takes 2 days longer to produce w widgets than machine Y. At these rates, if the two machines together produce w widgets in 3 days, how many days would it take machine X alone to produce 2w widgets?

  • A 4
  • B 6
  • C 8
  • D 10
  • E 12

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