Gabby and Neave started running together along a cross country track. When Neave completed the track in 33 minutes, Gabby had run only
59 of the track. Gabby’s average speed was 112 m/min slower than Neave’s.
- How long was the cross country track in m?
- Find Gabby’s average speed in m/min.
(a)
When Neave completed the track:
Neave's distance = 9 u
Gabby's distance = 5 u
Extra distance covered by Neave
= 9 u - 5 u
= 4 u
4 u = 112 x 33
4 u = 3696
1 u = 3696 ÷ 4 = 924
Distance of the cross country track
= 9 u
= 9 x 924
= 8316 m
(b)
Neave's speed
= 8316 ÷ 33
= 252 m/min
Gabby's speed
= 252 - 112
= 140 m/min
Answer(s): (a) 8316 m; (b) 140 m/min