To determine how much water you'll have after melting 50 grams of ice in 150 grams of water, you simply add the mass of the water produced from the melted ice to the mass of the water you already have.

When ice melts, it turns into water, and its mass remains the same. Therefore, when you melt 50 grams of ice, it will produce 50 grams of water.

So, you have:

- 150 grams of water (initial)
- 50 grams of water (from melted ice)

Now, you can add these two amounts together:

150 grams + 50 grams = 200 grams of water

Thus, you will end up with **200 grams of water**.