First of all, I drank 100G milk. After the first filling, milk 100G, water 100G. I drank 50 grams of milk and 50 grams of water. Then add 150G water and 50G milk. So ... A * * * drank 200G of water and 200G of milk.

First time: After drinking half a cup of milk (100g), add half a cup of water (100g), that is, after drinking 100g for the first time, there is still water in the cup (100g).

Second time: after drinking half a cup of milk and adding water (50g milk and 50g water), add half a cup of water (100g), that is, drink 50g milk and 50g water for the second time, and there are 150g water and 50g milk in the cup.

Third time: Drink it all this time (50g milk 150g water).

Summary:

Milk = 100+50+50

Water = 50+ 150

In units of 200/ cup

Xiao Xin drank a glass of milk and a glass of boiled water.