Question

A cup contains 6 ounces of milk. 2 ounces of chocolate syrup are added to the cup and thoroughly mixed. Then 2 ounces of that mixture are poured out. How many ounces of chocolate syrup are in the remaining mixture?

Answer 1

6 + 2 = 8
The amount of syrup per the whole mixture is 2/8, or 1/4
Your remove 2, or 1/4 of the whole thing. 
So, remove 1/4 of the milk, and 1/4 of the syrup
2*(1/4) = 1/2
2 - (1/2) = 1(1/2)

You have 1 and a half remaining.