Risa left home at 8.25 a.m. and drove towards the theme park which was 1049 km away. For the first 385 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 theme park?
(a)
Time taken to travel 385 km
= 385 ÷ 77
= 5 h
Distance of the remaining journey
= 1049 - 385
= 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 + 5
= 13 h
(b)
13 h after 8.25 a.m. = 9.25 p.m.
Answer(s): (a) 13 h; (b) 9.25 p.m.