Pipe X can fill a tank in 12 hours and pipe Y can fill the same tank in 36 hours. In how manyhours both pipe X and pipe Y together can fill one-third part of the tank?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 3 hours.
| Understanding/Application |
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Let the total capacity of the tank be 36 units Efficiency of Pipe X = 36/12 = 3 units per hour Efficiency of Pipe Y = 36/36 = 1 unit per hour Total efficiency of both the pipes = 4 units per hour One-third capacity of the tank = 36/3 = 12 units |
| 12 units can be filled in 12/4 = 3 hours |