Nicole and Lee started running together along a cross country track. When Lee completed the track in 44 minutes, Nicole had run only
49 of the track. Nicole’s average speed was 110 m/min slower than Lee’s.
- How long was the cross country track in m?
- Find Nicole’s average speed in m/min.
(a)
When Lee completed the track:
Lee's distance = 9 u
Nicole's distance = 4 u
Extra distance covered by Lee
= 9 u - 4 u
= 5 u
5 u = 110 x 44
5 u = 4840
1 u = 4840 ÷ 5 = 968
Distance of the cross country track
= 9 u
= 9 x 968
= 8712 m
(b)
Lee's speed
= 8712 ÷ 44
= 198 m/min
Nicole's speed
= 198 - 110
= 88 m/min
Answer(s): (a) 8712 m; (b) 88 m/min