To find the fraction of the ice cream that is strawberry, subtract the 3/4 fraction of chocolate and vanilla from the whole. The fraction of the ice cream that is strawberry is 1/4.
If there is 3/4 of ice cream that is chocolate and vanilla, and the rest is strawberry, we want to find out what fraction of the total ice cream is strawberry.
Since total ice cream is considered as 1 or 4/4, and we already have 3/4 that is not strawberry, we subtract the 3/4 from 1 to find the strawberry fraction:
1 (or 4/4) - 3/4 = 1/4
So, the fraction of the ice cream that is strawberry is 1/4.