Sabrina left home at 6.25 a.m. and drove towards the airport which was 1013 km away. For the first 348 km, she was travelling at 87 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 348 km
= 348 ÷ 87
= 4 h
Distance of the remaining journey
= 1013 - 348
= 665 km
Speed for remaining journey
= 87 + 8
= 95 km/h
Time taken to travel remaining journey
= 665 ÷ 95
= 7 h
Time taken to travel the whole journey
= 7 + 4
= 11 h
(b)
11 h after 6.25 a.m. = 5.25 p.m.
Answer(s): (a) 11 h; (b) 5.25 p.m.