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**A container has 20 L of milk. 4 L of milk is replaced with an equal quantity of water. What was will be the final quantity of milk in the container if the process is repeated once again?**

### Given Solution

Original quantity of milk = 20 L

After taking out 4 L and replacing it with water, milk left = 16L.

When repeating the process, after taking out 4 L of this mixture

Quantity of milk taken out = 4 x (16/ 20) =3.2 L

Thus, the required quantity of milk left = 32 – 2.2 L = **28.8 L**

> **28.8L **? It does not seem right.

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