Glen left City F for City E at 07 45. Yen left City F for City C at the same time. At 10 45, they were 570 km apart. Both maintained a constant speed and reached their destination at the same time at 12 27.
- Find the distance between Cities A and C.
- If Yen was 910 the speed of Glen, find Glen's speed.
(a)
Time taken for Glen and Yen to travel 07 45 to 10 45 = 3 h
Time taken for Glen and Yen to travel 07 45 to 12 27 = 4 h 42 min = 4
4260 h = 4
710 h
Distance travelled by Glen and Yen in 1 hour
= 570 ÷ 3
= 190 km
Total distance
= 4
710 x 190
= 893 km
(b)
Yen's distance : Glen's distance
9 : 10
Yen's speed : Glen's speed
9 : 10
19 u = 190 km
1 u = 190 ÷ 19 = 10 km
Glen's speed
= 10 u
= 10 x 10
= 100 km/h
Answer(s): (a) 893 km; (b) 100km/h