Zoe left home at 8.20 a.m. and drove towards the theme park which was 834 km away. For the first 450 km, she was travelling at 90 km/h. Then she increased her speed by 6 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 450 km
= 450 ÷ 90
= 5 h
Distance of the remaining journey
= 834 - 450
= 384 km
Speed for remaining journey
= 90 + 6
= 96 km/h
Time taken to travel remaining journey
= 384 ÷ 96
= 4 h
Time taken to travel the whole journey
= 4 + 5
= 9 h
(b)
9 h after 8.20 a.m. = 5.20 p.m.
Answer(s): (a) 9 h; (b) 5.20 p.m.