Drag each pair of distances to show if A is the greater distance, B is the greater distance, or if you cannot know for sure which is greater.
A: 2/3 of a 40-yard dash
B: 2/3 of a 100-yard dash
A: 1/2 lap around a track
B: 1/2 lap around a school
A: 3/4 mile
B: 1/4 of a 1-mile track