Julie left home at 5.45 a.m. and drove towards the mountain which was 1062 km away. For the first 504 km, she was travelling at 84 km/h. Then she increased her speed by 9 km/h and completed the remaining journey.
- How long did she take for her whole journey?
- At what time did she reach the mountain?
(a)
Time taken to travel 504 km
= 504 ÷ 84
= 6 h
Distance of the remaining journey
= 1062 - 504
= 558 km
Speed for remaining journey
= 84 + 9
= 93 km/h
Time taken to travel remaining journey
= 558 ÷ 93
= 6 h
Time taken to travel the whole journey
= 6 + 6
= 12 h
(b)
12 h after 5.45 a.m. = 5.45 p.m.
Answer(s): (a) 12 h; (b) 5.45 p.m.