hey!!
here is your answer >>>
If there is 1 liter in the water bottle, and Halle drinks 1/4 of it before school starts, which means that,
she drinks,
1/4(1000) as 1 liter is 1000 ml
=> 250 no before the school starts, left = 750 ml.
And after school starts and before lunch, she drinks 2/3 of the remaining , remaining is 750 and 2/3 of it will be,
2/3(750)
=> 500 ml
They are asking for what fraction,
total is 1000 ml and she drank 500ml , fraction would be ,
500/1000, which is 1/2 .
How many milliliters left is 500 ml.
Hope my answer helps!