Jaslyn left home at 9.40 a.m. and drove towards the theme park which was 981 km away. For the first 344 km, she was travelling at 86 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 344 km
= 344 ÷ 86
= 4 h
Distance of the remaining journey
= 981 - 344
= 637 km
Speed for remaining journey
= 86 + 5
= 91 km/h
Time taken to travel remaining journey
= 637 ÷ 91
= 7 h
Time taken to travel the whole journey
= 7 + 4
= 11 h
(b)
11 h after 9.40 a.m. = 8.40 p.m.
Answer(s): (a) 11 h; (b) 8.40 p.m.