Jen left home at 9.30 a.m. and drove towards the theme park which was 897 km away. For the first 462 km, she was travelling at 77 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 462 km
= 462 ÷ 77
= 6 h
Distance of the remaining journey
= 897 - 462
= 435 km
Speed for remaining journey
= 77 + 10
= 87 km/h
Time taken to travel remaining journey
= 435 ÷ 87
= 5 h
Time taken to travel the whole journey
= 5 + 6
= 11 h
(b)
11 h after 9.30 a.m. = 8.30 p.m.
Answer(s): (a) 11 h; (b) 8.30 p.m.