Jaslyn left home at 8.30 a.m. and drove towards the airport which was 832 km away. For the first 352 km, she was travelling at 88 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 airport?
(a)
Time taken to travel 352 km
= 352 ÷ 88
= 4 h
Distance of the remaining journey
= 832 - 352
= 480 km
Speed for remaining journey
= 88 + 8
= 96 km/h
Time taken to travel remaining journey
= 480 ÷ 96
= 5 h
Time taken to travel the whole journey
= 5 + 4
= 9 h
(b)
9 h after 8.30 a.m. = 5.30 p.m.
Answer(s): (a) 9 h; (b) 5.30 p.m.