Jaslyn and Gabriel started running together along a cross country track. When Gabriel completed the track in 22 minutes, Jaslyn had run only
49 of the track. Jaslyn’s average speed was 95 m/min slower than Gabriel’s.
- How long was the cross country track in m?
- Find Jaslyn’s average speed in m/min.
(a)
When Gabriel completed the track:
Gabriel's distance = 9 u
Jaslyn's distance = 4 u
Extra distance covered by Gabriel
= 9 u - 4 u
= 5 u
5 u = 95 x 22
5 u = 2090
1 u = 2090 ÷ 5 = 418
Distance of the cross country track
= 9 u
= 9 x 418
= 3762 m
(b)
Gabriel's speed
= 3762 ÷ 22
= 171 m/min
Jaslyn's speed
= 171 - 95
= 76 m/min
Answer(s): (a) 3762 m; (b) 76 m/min