A

Admin • 825.56K Points
Coach

Q. A pipe fills a tank in 14 hours. Due to a leak, it takes 21 hours to fill. In how many hours can the leak empty the full tank?

  • (A) 42 hours
  • (B) 28 hours
  • (C) 21 hours
  • (D) 14 hours
Explanation by: Admin
Leak rate = 1/14 − 1/21 = 1/42.

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