Answer:
1,700 milliliters
Step-by-step explanation:
Convert the liters that Javier and his brother got into milliliters.
In 1 liter, there are 1000 milliliters.
So, Javier's brother bought 1000 milliliters of soda.
And, in 1/2 liter of soda, there are 500 milliliters. So, Javier bought 500 milliliters of soda.
Add these two amounts to how much Javier's mom bought:
500 + 1000 + 200
= 1700
So, for his party, Javier has 1,700 total milliliters of soda.