Will left City W for City V at 08 35. Julie left City W for City C at the same time. At 11 35, they were 540 km apart. Both maintained a constant speed and reached their destination at the same time at 15 19.
- Find the distance between Cities A and C.
- If Julie was 45 the speed of Will, find Will's speed.
(a)
Time taken for Will and Julie to travel 08 35 to 11 35 = 3 h
Time taken for Will and Julie to travel 08 35 to 15 19 = 6 h 44 min = 6
4460 h = 6
1115 h
Distance travelled by Will and Julie in 1 hour
= 540 ÷ 3
= 180 km
Total distance
= 6
1115 x 180
= 1212 km
(b)
Julie's distance : Will's distance
4 : 5
Julie's speed : Will's speed
4 : 5
9 u = 180 km
1 u = 180 ÷ 9 = 20 km
Will's speed
= 5 u
= 5 x 20
= 100 km/h
Answer(s): (a) 1212 km; (b) 100km/h