One foot is 12 inches, multiply that by 3 and you have 1 yard.
To get one yard to 3 yards ad 36+36+36 or 36 X 3
3 yards is 108.
Drugs jump was 3 yards.
3 yards = 108
3 yards = Doug's jump
Doug's jump = 108
108- 98 = 10
Doug's jump was 10 inches longer