Answer:
1 L or 1,000 mL
Explanation:
Since Ed filled the bottle up with 1.2 L of water and he drank 200 mL, we need to have one same unit. I would change 1.2 L to milliliters by doing 1.2x1,000=12,000. Then I do 12,000-200=1,000mL. 1,000mL=1L. So the answer is 1L or 1,000mL.