Answer:
A) Halle drink 1/2 of the bottle after school starts, but before lunch.
B) 250 milliliters are left in the bottle at lunch?
Explanation:
She drinks one fourth f the bottle before school starts
= 1/4 of 1 litre
= 1/4 litre
Amount left after drinking before school starts
= 1 - 1/4
Amount left = 3/4 litre
Fraction of the bottle Halle drink after school starts, but before lunch =
= two third of the rest before lunch
= 2/3 of Amount left
= 2/3 of 3/4
= 2/3 x 3/4 = 1/2 litre
left in the bottle at lunch
= 1 - (1/4 + 1/2)
= 1/4 litre
Since 1 litre = 1000millilitre
1/4 litre = 250millilitre