Question

Every morning, Halle goes to school with a 1-liter bottle of water. She drinks 1/4 of the bottle before school starts and 2/3 of the rest before lunch. What fraction of the bottle does Halle drink after school starts but before lunch?

Answer 1

Since 3/4-2/3=1/12, she drinks 1/12 of the bottle.

Answer 2

She drinks 2/3 of the remaining 3/4 so 3/4 - 2/3 = 1/12