Question

Kelly has 1/2 of a gallon of milk left in her refrigerator. She drank 3/4 of it. What fraction of gallon of milk is left in the refrigerator?

Answer 1

1/4 
3/4-1/2=1/4 
1/2=2/4

Answer 2

1/2-3/4=1/4
that is your answer 1/4