Cole left City X for City W at 09 21. Anna left City X for City C at the same time. At 13 21, they were 680 km apart. Both maintained a constant speed and reached their destination at the same time at 15 15.
- Find the distance between Cities A and C.
- If Anna was 89 the speed of Cole, find Cole's speed.
(a)
Time taken for Cole and Anna to travel 09 21 to 13 21 = 4 h
Time taken for Cole and Anna to travel 09 21 to 15 15 = 5 h 54 min = 5
5460 h = 5
910 h
Distance travelled by Cole and Anna in 1 hour
= 680 ÷ 4
= 170 km
Total distance
= 5
910 x 170
= 1003 km
(b)
Anna's distance : Cole's distance
8 : 9
Anna's speed : Cole's speed
8 : 9
17 u = 170 km
1 u = 170 ÷ 17 = 10 km
Cole's speed
= 9 u
= 9 x 10
= 90 km/h
Answer(s): (a) 1003 km; (b) 90km/h