Question:
Pipes A and B can fill a tank in 5 and 6 hours respectively. Pipe C can empty it in 12 hours. If all the three pipes are opened together, then the tank will be filled in:
[A].
Pipes A and B can fill a tank in 5 and 6 hours respectively. Pipe C can empty it in 12 hours. If all the three pipes are opened together, then the tank will be filled in:
[A].
1 | 13 | hours |
17 |
[B].
2 | 8 | hours |
11 |
[C].
3 | 9 | hours |
17 |
[D].
4 | 1 | hours |
2 |
Answer: Option C
Explanation:
Net part filled in 1 hour | 1 | + | 1 | – | 1 | = | 17 | . | ||
5 | 6 | 12 | 60 |
The tank will be full in | 60 | hours i.e., 3 | 9 | hours. |
17 | 17 |