A

Admin • 828.03K Points
Coach

Q. A tank can be filled by two pipes in 10 and 15 hours respectively. Due to a leak, the tank takes 30 hours to fill. In how many hours can the leak empty the full tank?

  • (A) 20 hours
  • (B) 30 hours
  • (C) 60 hours
  • (D) 45 hours
Explanation by: Admin
Leak rate = (1/10 + 1/15) − 1/30 = 1/30.

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