Subject: General Aptitude · Chapter: Pipes and Cisterns · Exam: · Marks: · Difficulty:
A water tank has been filled with two filler taps P and Q and a drain pipe R. Taps P and Q fill at the rate of 5 litres per minute and 9 litres per minute respectively. What is the capacity of the tank? (M.A.T., 2006) I. Tap R drains out at the rate of 6 litres per minute. II. If all the three taps are opened simultaneously, 1 then the tank is filled in 4 hours. 2 III. Tap R drains the filled tank in 15 hours.