Jane left home at 7.30 a.m. and drove towards the theme park which was 674 km away. For the first 284 km, she was travelling at 71 km/h. Then she increased her speed by 7 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 284 km
= 284 ÷ 71
= 4 h
Distance of the remaining journey
= 674 - 284
= 390 km
Speed for remaining journey
= 71 + 7
= 78 km/h
Time taken to travel remaining journey
= 390 ÷ 78
= 5 h
Time taken to travel the whole journey
= 5 + 4
= 9 h
(b)
9 h after 7.30 a.m. = 4.30 p.m.
Answer(s): (a) 9 h; (b) 4.30 p.m.