Julie left home at 7.10 a.m. and drove towards the theme park which was 784 km away. For the first 192 km, she was travelling at 64 km/h. Then she increased her speed by 10 km/h and completed the remaining journey.
- How long did she take for her whole journey?
- At what time did she reach the theme park?
(a)
Time taken to travel 192 km
= 192 ÷ 64
= 3 h
Distance of the remaining journey
= 784 - 192
= 592 km
Speed for remaining journey
= 64 + 10
= 74 km/h
Time taken to travel remaining journey
= 592 ÷ 74
= 8 h
Time taken to travel the whole journey
= 8 + 3
= 11 h
(b)
11 h after 7.10 a.m. = 6.10 p.m.
Answer(s): (a) 11 h; (b) 6.10 p.m.