Zoe left home at 10.50 a.m. and drove towards the theme park which was 941 km away. For the first 486 km, she was travelling at 81 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 486 km
= 486 ÷ 81
= 6 h
Distance of the remaining journey
= 941 - 486
= 455 km
Speed for remaining journey
= 81 + 10
= 91 km/h
Time taken to travel remaining journey
= 455 ÷ 91
= 5 h
Time taken to travel the whole journey
= 5 + 6
= 11 h
(b)
11 h after 10.50 a.m. = 9.50 p.m.
Answer(s): (a) 11 h; (b) 9.50 p.m.