Question

A vessel contains 400l milk.20l milk was replaced by water and then 40l of the mixture was replaced by water.find ratio of milk and water in resulting mixture

Answer 1

Here’s the ratio of Milk to water at different stages:

Stage 1: 40:0

Stage 2: 36:4 or 9:1

At Stage 3: 4 liters of this mixture was taken out and replaced with water.

In 4 liters of mixture there is 9 parts milk and 1 part water. So it means that 3.6 liters of milk was removed and 0.4 liters of water was removed.

When we add 4 liters of water, that leaves us with 36 - 3.6 = 32.4 liters of milk and 7.6 liters of water. Ratio of milk to water now is 32.4 : 7.6.

At Stage 4: 4 liters of this mixture was taken out and replaced with 4 liters of water.

4 liters of this mixture will have 0.76 liters of water and 3.24 liters of milk.

So that leaves us with 29.16 liters of milk.

Answer 2

From the given details, we can understand that the vessel contains 400l milk. The ratio of original mixture is given below which is 380: 20.

Once the 40l of mixture is replaced by water then the ratio becomes. And finally, we get 9:1 as a ration of water and milk in the resulting mixture.