Anna left home at 6.25 a.m. and drove towards the theme park which was 721 km away. For the first 366 km, she was travelling at 61 km/h. Then she increased her speed by 10 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 366 km
= 366 ÷ 61
= 6 h
Distance of the remaining journey
= 721 - 366
= 355 km
Speed for remaining journey
= 61 + 10
= 71 km/h
Time taken to travel remaining journey
= 355 ÷ 71
= 5 h
Time taken to travel the whole journey
= 5 + 6
= 11 h
(b)
11 h after 6.25 a.m. = 5.25 p.m.
Answer(s): (a) 11 h; (b) 5.25 p.m.