Gabby and Oscar started running together along a cross country track. When Oscar completed the track in 27 minutes, Gabby had run only
59 of the track. Gabby’s average speed was 108 m/min slower than Oscar’s.
- How long was the cross country track in m?
- Find Gabby’s average speed in m/min.
(a)
When Oscar completed the track:
Oscar's distance = 9 u
Gabby's distance = 5 u
Extra distance covered by Oscar
= 9 u - 5 u
= 4 u
4 u = 108 x 27
4 u = 2916
1 u = 2916 ÷ 4 = 729
Distance of the cross country track
= 9 u
= 9 x 729
= 6561 m
(b)
Oscar's speed
= 6561 ÷ 27
= 243 m/min
Gabby's speed
= 243 - 108
= 135 m/min
Answer(s): (a) 6561 m; (b) 135 m/min