# Oil tank and pipes

The underground oil tank can be filled by two oil pipelines. The first is filled in 72 hours and the second in 48 hours. How many hours from the moment when first pipeline began to fill the oil is it necessary to start filling it with the second to fill in 1 and 1/2 day?

### Correct answer:

Tips to related online calculators

Looking for calculator of harmonic mean?

Looking for a statistical calculator?

Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?

Tip: Our volume units converter will help you with the conversion of volume units.

Do you want to convert time units like minutes to seconds?

Looking for a statistical calculator?

Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?

Tip: Our volume units converter will help you with the conversion of volume units.

Do you want to convert time units like minutes to seconds?

#### You need to know the following knowledge to solve this word math problem:

## Related math problems and questions:

- Three pumps

We are filling the pool. The first pump would be filled in 12 hours, the second pump in 15 hours. If all three pumps were running at the same time, it would fill the pool for 4 hours. How long would the pool fill only with the third pump? - In and out

The empty tank is filled in 12 minutes and empty in 16 minutes. How long does it take to fill if we forget to close the drain? The tank has 1000 liters of volume. - Two pipes

How long will the pool be filled with a double supply pipe if it takes the pool to fill the first pipe by 4 hours longer and the second pipe 9 hours longer than both pipes open at the same time? - Two pumps

The first pump fills the tank in 24 hours second pump in another 40 hours. For how long will it take to fill the tank if it operates both pumps at the same time? - Inlet minus outlet

Water flows into the tank through two pipes and flows out of the third pipe spontaneously. Pipe A itself would fill the tank in 3 hours, pipe B itself would fill in 4 hours, and pipe C would flow out in 12 hours. How long will the tank be full if all thre - Pumping

The tank is filled with a larger pump in 12 hours and with scond pump in 15 hours. For how long does the tank fill when both pumps are switched on at the same time? - Soldier

An experienced soldier digs a good trench in 30 hours. Two soldiers dug the same trench each 40 hours. How many hours will the ditch dig all three together? - Tank No 8

Tank is filled by one inlet valve with a flow rate of 12 liters per second in 72 minutes. How long take the tank to fill, if we open half an hour after one more inlet? - Tributaries

The first tributary fill pool with water in 15 hours. The second tributary fill pool in 10 hours. For how many hours the pool is filled with both tributaries? - The dam

The water reservoir is filled with first tributary for 25 hours second tributary for 35 hours. Some time were both inlets open, then a second tributary closed and the tank was filled in four hours. What time water flowed from both tributaries? (Expressed - Water inlets

Inlet valve with a flow rate of 12 liters per second is filled tank for 72 minutes. How long take to fill full tank if we open one more such valve half an hour after? - Inflow - outflow

The tank will fill by inflow for 56 minutes and empties by outflow for 77 minutes. How long take to fill the tank if it is also opened to the inflow and outflow? - Three pumps

The water tank is emptied with the first pump in 6 hours, with the second pump in 2 hours. In order to be emptied in 1 hour, all three pumps had to be started at once. How long will take tank be emptied by only the third pump? - Two pumps

Pump A takes twice as long to fill a tank as B. Together they take 2 hours to fill the tank. How long does each one take to fill the tank by itself? - Five pumps

The water tank is filled with two pumps in 48 minutes. How long would it take to fill it with 5 same pumps? - Garden

Father dig up the garden in 11 hours. Son in 15 hours. How many hours take dig up the garden together? - Pool

If water flows into the pool by two inlets, fill the whole for 19 hours. The first inlet filled pool 5 hour longer than the second. How long pool take to fill with two inlets separately?