Home » Aptitude » Pipes and Cistern » Question
  1. A pipe can fill a tank with water in 3 hours. Due to leakage in bottom, it takes
    3
    1
      hours to fill it . In what time the leak will empty the fully filled tank ?
    2



    1. 12 hours
    2. 21 hours
    3. 6
      1
      hours
      2
    4. 10
      1
      hours
      2
Correct Option: B

Let the leak empty the full tank in t hours.
According to question ,

1
-
1
=
2
3t7

1
=
1
-
2
=
7 - 6
t3721

1
=
1
⇒ t = 21 hours
t21



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