Mathematics · Time and Work
Pipes A and B can fill a tank in 20 hours and 12 hours, respectively. Pipe C is an emptying pipe. When all the three pipes are opened together for 5 hours, 16th part of the tank is filled. Initially, A and B together fill 35th part of the tank and then C is also opened. In how many hours (total) will the tank be filled completely?
- 11612✓
- 216
- 31512
- 417
Correct answer
1612
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