Answer:
800 milliliters
Explanation:
we know that
To find out the total amount Kelly drank, add the amount of coffee and the amount of yogurt and convert the result to milliliters.
so
0.5+0.3=0.8 liters
Remember that
1 liter= 1,000 milliliters
so
0.8 liters=0.8*1,000=800 milliliters