Hazel left home at 7.15 a.m. and drove towards the theme park which was 1144 km away. For the first 360 km, she was travelling at 90 km/h. Then she increased her speed by 8 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 360 km
= 360 ÷ 90
= 4 h
Distance of the remaining journey
= 1144 - 360
= 784 km
Speed for remaining journey
= 90 + 8
= 98 km/h
Time taken to travel remaining journey
= 784 ÷ 98
= 8 h
Time taken to travel the whole journey
= 8 + 4
= 12 h
(b)
12 h after 7.15 a.m. = 7.15 p.m.
Answer(s): (a) 12 h; (b) 7.15 p.m.