A ship 77 km from the shore, springs a leak which admits `2 1/4` tonnes of water in `5 1/2` minutes. 92 tonnes of water would sink it. But the pumps can throw out 12 tonnes of water per hour. Find the averages rate of sailing so that the ship may just reach the shore as it begins to sink.

A ship 60 km from the shore spring a leak which admits 3(3)/(4) tonnes of water in 15 min. 25 tonnes of water would suffer to sink her, but the pumps can thrown out 12(1)/(2) tonnes of water an hour. Find the average rate of sailing that the she may just reach the shore as she begins to sink.

A ship 55 km from the shore springs a leak which admits 2 tonnes of water in 6 min . 80 tonnes of water would suffer to sink it, but the pumps can throw out 12 tonnes of water an hour. Find the average rate of sailing that it may just reach the shore as it begins to sink

A ship, 40 kilometres from the shore, springs a which admits 3 3/4 tonnes of water in 12 minutes. 60 tonnes would suffice to sink her, but the ship, pumps can throw out 12 tonnes of water in hour. Find the average rate of sailing, so that may reach the shore just as she begins to sink. 1 1/2k m//h r b. 2 2/1k m//h r c. 3 1/2k m//h r d. 4 1/2k m//h r

A ship is sinking and 120 more tons of water would suffice to sink it. Water seeps in at a constant rate of 2 tons a minute while pumps remove it at a rate of 1.75 tons a minutes. How much time in minutes has the ship to reach the shore before is sinks?

The area of cross section of the pipe is 4.8 cm2 and water is pumped out of it and the rate of 24 km/hr. Find in litres the volume of water which flows out of the pipe in one minute.

If a river of depthness 2 metres and breadth 45 metress, flowrs at a speed of 3 km per hours, then find the quanity of water that will fall from the river to the sea in 1 minute.

A water tank has the shape of an inverted righ circular cone with its axis vertical and vertex lowermost . Its semi-vertical angle is tan^(-1)(0.5) . Water is poured into it at a constant rate of 4 cubic meter per hour . Find the rate at which the level of the water is rising at the instant when the depth of water in the tank is 2 m.

A water tank has the shape of an inverted righ circular cone with its axis vertical and vertex lowermost . Its semi-vertical angle is tan^(-1)(0.5) . Water is poured into it at a constant rate of 4 cubic meter per hour . Find the rate at which the level of the water is rising at the instant when the depth of water in the tank is 2 m.

Find the power (in W) of a pump if it can lift 1 tonne of water by 90 m in 30 minutes. (assume 100% effciency and use g = 10m//s^2)