Erika left home at 10.25 a.m. and drove towards the airport which was 658 km away. For the first 244 km, she was travelling at 61 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 244 km
= 244 ÷ 61
= 4 h
Distance of the remaining journey
= 658 - 244
= 414 km
Speed for remaining journey
= 61 + 8
= 69 km/h
Time taken to travel remaining journey
= 414 ÷ 69
= 6 h
Time taken to travel the whole journey
= 6 + 4
= 10 h
(b)
10 h after 10.25 a.m. = 8.25 p.m.
Answer(s): (a) 10 h; (b) 8.25 p.m.