Xuan left home at 9.40 a.m. and drove towards the theme park which was 777 km away. For the first 201 km, she was travelling at 67 km/h. Then she increased her speed by 5 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 201 km
= 201 ÷ 67
= 3 h
Distance of the remaining journey
= 777 - 201
= 576 km
Speed for remaining journey
= 67 + 5
= 72 km/h
Time taken to travel remaining journey
= 576 ÷ 72
= 8 h
Time taken to travel the whole journey
= 8 + 3
= 11 h
(b)
11 h after 9.40 a.m. = 8.40 p.m.
Answer(s): (a) 11 h; (b) 8.40 p.m.