Victoria left home at 5.15 a.m. and drove towards the airport which was 792 km away. For the first 248 km, she was travelling at 62 km/h. Then she increased her speed by 6 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 248 km
= 248 ÷ 62
= 4 h
Distance of the remaining journey
= 792 - 248
= 544 km
Speed for remaining journey
= 62 + 6
= 68 km/h
Time taken to travel remaining journey
= 544 ÷ 68
= 8 h
Time taken to travel the whole journey
= 8 + 4
= 12 h
(b)
12 h after 5.15 a.m. = 5.15 p.m.
Answer(s): (a) 12 h; (b) 5.15 p.m.