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| Q.5 | Pipes A, B and C together can fill a tank in 18 hours. All the three pipes were opened together for 10 hours and then only pipe C is closed, and A and B together took 12 hours to fill the remaining part of the tank. Pipe C alone can fill the whole tank in: | |
| Ans | 1. 54 hours | |
| 2. 40 hours | ||
| 3. 45 hours | ||
| 4. 36 hours |
Correct Ans: 1
