# CAT 2018 Question Paper | Quants Slot 1

###### CAT Previous Year Paper | CAT Pipes & Cisterns Questions | Question 31

This fabulous question is from Pipes and Cisterns. This type of question is one of the frequently asked questions in the CAT Exam. One can expect at least one question from this topic. Make sure you practice a lot of questions from the CAT Previous Year Paper to get a better handle on this

Question 31 :A tank is fitted with pipes, some filling it and the rest draining it. All filling pipes fill at the same rate, and all draining pipes drain at the same rate. The empty tank gets completely filled in 6 hours when 6 filling and 5 draining pipes are on, but this time becomes 60 hours when 5 filling and 6 draining pipes are on. In how many hours will the empty tank get completely filled when one draining and two filling pipes are on? [TITA]

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6F – 5D = $$frac{1}{6}$ th of the tank ---$1)
5F-6D = $$frac{1}{60}$ th of the tank ---$2)