The ratio of milk to water in a container is 5:1 by volume. If the total volume of the mixture is 9 liters, find the volume of water in it.

9/(5+1) = 1.5

1.5 * 5 = 7.5

1.5 * 1 = 1.5

7.5 + 1.5 = 9

To solve this problem, we can set up a proportion using the given ratio and the total volume of the mixture.

Let's assign variables to the volumes of milk and water in the mixture. Let M represent the volume of milk and W represent the volume of water.

The ratio of milk to water is 5:1, which means that M/W = 5/1.

We also know that the total volume of the mixture is 9 liters, so we have the equation M + W = 9.

To find the volume of water in the mixture, we need to isolate the variable W in one of the equations.

We can start by rearranging the first equation to solve for M:

M/W = 5/1
M = 5W

Now we substitute this expression for M in the second equation:

5W + W = 9
6W = 9

Next, we solve for W by dividing both sides of the equation by 6:

W = 9/6
W = 1.5

Therefore, the volume of water in the mixture is 1.5 liters.