List of top Quantitative Aptitude Questions on Pipe and Cistern

A ship 156 km from the shore springs a leak which admits \(2\frac{1}{3}\) metric tons of water in \(6\frac{1}{2}\) minutes. A quantity of 68 metric tons would suffice to sink it, but its pumps can throw out 15 metric tons in an hour. The average rate of sailing so that it just reaches the shore as it begins to sink should be
A pump can be operated both for filling a tank and for emptying it. The capacity of the tank is 2400 m\(^3\). The emptying capacity of the pump is 10 m\(^3\) per minute higher than its filling capacity. Consequently, the pump needs 8 minutes less to empty the tank than to fill it. Find the filling capacity of the pump.
A, B and C are three taps connected to a tank. A and B together can fill the tank in 6 h, B and C together can fill it in 10 h and A and C together can fill it in \(7\frac{1}{2}\) h. In how much time would all three take to fill the tank?
The boat will sink when the weight on it increases beyond 350 kg. There is a hole in it through which the water leaks in at the rate of 0.4 kg/s. The weight of the boat is 1200 kg, and the weight of the boatman is 48 kg. The boatman throws out water at the rate of 0.04 kg/s. There are four passengers whose weights are 42.5 kg, 53.5 kg, 43.5 kg and 54.5 kg. How long will the boat float?