Rachel left home at 8.30 a.m. and drove towards the theme park which was 915 km away. For the first 440 km, she was travelling at 88 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 440 km
= 440 ÷ 88
= 5 h
Distance of the remaining journey
= 915 - 440
= 475 km
Speed for remaining journey
= 88 + 7
= 95 km/h
Time taken to travel remaining journey
= 475 ÷ 95
= 5 h
Time taken to travel the whole journey
= 5 + 5
= 10 h
(b)
10 h after 8.30 a.m. = 6.30 p.m.
Answer(s): (a) 10 h; (b) 6.30 p.m.