Lynn left home at 10.15 a.m. and drove towards the airport which was 1086 km away. For the first 528 km, she was travelling at 88 km/h. Then she increased her speed by 5 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 528 km
= 528 ÷ 88
= 6 h
Distance of the remaining journey
= 1086 - 528
= 558 km
Speed for remaining journey
= 88 + 5
= 93 km/h
Time taken to travel remaining journey
= 558 ÷ 93
= 6 h
Time taken to travel the whole journey
= 6 + 6
= 12 h
(b)
12 h after 10.15 a.m. = 10.15 p.m.
Answer(s): (a) 12 h; (b) 10.15 p.m.