Wendy left home at 9.35 a.m. and drove towards the theme park which was 1020 km away. For the first 486 km, she was travelling at 81 km/h. Then she increased her speed by 8 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
= 1020 - 486
= 534 km
Speed for remaining journey
= 81 + 8
= 89 km/h
Time taken to travel remaining journey
= 534 ÷ 89
= 6 h
Time taken to travel the whole journey
= 6 + 6
= 12 h
(b)
12 h after 9.35 a.m. = 9.35 p.m.
Answer(s): (a) 12 h; (b) 9.35 p.m.