Kylie left home at 9.25 a.m. and drove towards the city which was 659 km away. For the first 267 km, she was travelling at 89 km/h. Then she increased her speed by 9 km/h and completed the remaining journey.
- How long did she take for her whole journey?
- At what time did she reach the city?
(a)
Time taken to travel 267 km
= 267 ÷ 89
= 3 h
Distance of the remaining journey
= 659 - 267
= 392 km
Speed for remaining journey
= 89 + 9
= 98 km/h
Time taken to travel remaining journey
= 392 ÷ 98
= 4 h
Time taken to travel the whole journey
= 4 + 3
= 7 h
(b)
7 h after 9.25 a.m. = 4.25 p.m.
Answer(s): (a) 7 h; (b) 4.25 p.m.