55 men can finish a work in 42 days. How many additional men must be engaged to complete the work 9 days earlier?

55 men can finish a work in 42 days. How many additional men must be engaged to complete the work 9 days earlier?
  • A) 16
  • B) 15
  • C) 17
  • D) 18

Correct Answer: B) 15

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