Nicole and Lee started running together along a cross country track. When Lee completed the track in 35 minutes, Nicole had run only
58 of the track. Nicole’s average speed was 96 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 = 8 u
Nicole's distance = 5 u
Extra distance covered by Lee
= 8 u - 5 u
= 3 u
3 u = 96 x 35
3 u = 3360
1 u = 3360 ÷ 3 = 1120
Distance of the cross country track
= 8 u
= 8 x 1120
= 8960 m
(b)
Lee's speed
= 8960 ÷ 35
= 256 m/min
Nicole's speed
= 256 - 96
= 160 m/min
Answer(s): (a) 8960 m; (b) 160 m/min