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Source: GWD

Level: 0

Pat, Kate, and Mark charged a total of 162 hours to a certain project. If Pat charged twice as much time to the project as Kate and 1/3 as much time as Mark, how many more hours did Mark charge to the project than Kate?

  • A 18
  • B 36
  • C 72
  • D 90
  • E 108

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