# Inlet minus outlet

Water flows into the tank through two pipes and flows out of the third pipe spontaneously. The pipe A itself would fill the tank in 3 hours, the pipe B itself would fille in 4 hours, and the pipe C itself would flow out in 12 hours. How long will the tank be full if all three pipes open at the same time?

**Result****Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):**

**Showing 0 comments:**

**Be the first to comment!**

#### To solve this example are needed these knowledge from mathematics:

## Next similar examples:

- Hectoliters of water

The pool has a total of 126 hectoliters of water. The first pump draws 2.1 liters of water per second. A second pump pumps 3.5 liters of water per second. How long will it take both pumps to drain four-fifths of the water at the same time? - Vehicle tank

A vehicle tank was 3/5 full of petrol. When 21 liters of fuel was added it was 5/6 full. How many liters of petrol can the tank hold? - Unknown number

I think the number - its sixth is 3 smaller than its third. - Boys and girls

There are 28 girls in the hall. 5/7 of all children are boys. How many children and how many boys are there? - Pears

There were pears in the basket, I took two-fifths of them, and left six in the basket. How many pears did I take? - UN 1

If we add to an unknown number his quarter, we get 210. Identify unknown number. - Equation

Solve the equation: 1/2-2/8 = 1/10; Write the result as a decimal number. - Simple equation 6

Solve equation with one variable: X/2+X/3+X/4=X+4 - Equation with x

Solve the following equation: 2x- (8x + 1) - (x + 2) / 5 = 9 - Given

Given 2x =0.125 find the value of x - Eqn

Solve equation with fractions: 2x/3-50=40+x/4 - Simple equation

Solve for x: 3(x + 2) = x - 18 - Milk

At the kindergarten, every child got 1/5 liter of milk in the morning and another 1/8 liter of milk in the afternoon. How many liters were consumed per day for 20 children? - Together

Grandfather, father, and son are carpenters. They decided to make a wardrobe. Father produces it for 12 hours, his son for 15 hours, and grandfather for 10 hours. How long will they make it together? - Unknown number

Identify unknown number which 1/5 is 40 greater than one tenth of that number. - Bricklayers

8 bricklayers build a house for 630 days. How many bricklayers have to add after 150 days, so then the whole building completed in (next) 320 days? - Equation with fractions

Solve equation: ? It is equation with fractions.