Jane left home at 8.20 a.m. and drove towards the airport which was 895 km away. For the first 231 km, she was travelling at 77 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 airport?
(a)
Time taken to travel 231 km
= 231 ÷ 77
= 3 h
Distance of the remaining journey
= 895 - 231
= 664 km
Speed for remaining journey
= 77 + 6
= 83 km/h
Time taken to travel remaining journey
= 664 ÷ 83
= 8 h
Time taken to travel the whole journey
= 8 + 3
= 11 h
(b)
11 h after 8.20 a.m. = 7.20 p.m.
Answer(s): (a) 11 h; (b) 7.20 p.m.