The all flew 8 yards, so we can eliminate that for now.
1/2 - Sara - 6/12
2/3 - Jason - 8/12
1/4 - Michael - 3/12
1/6 - Denise - 2/12
Common denominator: 12
Jason's plane flew the farthest as his numerator is the largest (after we found a common denominator for all 4 fractions).