Raeann left home at 7.15 a.m. and drove towards the theme park which was 769 km away. For the first 300 km, she was travelling at 60 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 300 km
= 300 ÷ 60
= 5 h
Distance of the remaining journey
= 769 - 300
= 469 km
Speed for remaining journey
= 60 + 7
= 67 km/h
Time taken to travel remaining journey
= 469 ÷ 67
= 7 h
Time taken to travel the whole journey
= 7 + 5
= 12 h
(b)
12 h after 7.15 a.m. = 7.15 p.m.
Answer(s): (a) 12 h; (b) 7.15 p.m.