A

Admin • 825.56K Points
Coach

Q. Two pipes can fill a tank in 4 hours and 6 hours respectively. If both are opened for 2 hours and then the faster pipe is closed, how much time will the slower pipe take to fill the remaining tank?

  • (A) 1 hour
  • (B) 2 hours
  • (C) 3 hours
  • (D) 4 hours
Explanation by: Admin
Work done in 2 hours = 2(1/4+1/6)=5/6. Remaining=1/6 → slower pipe (1/6 per hour) takes 1 hour.

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