Raeann left home at 8.45 a.m. and drove towards the airport which was 958 km away. For the first 350 km, she was travelling at 70 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 350 km
= 350 ÷ 70
= 5 h
Distance of the remaining journey
= 958 - 350
= 608 km
Speed for remaining journey
= 70 + 6
= 76 km/h
Time taken to travel remaining journey
= 608 ÷ 76
= 8 h
Time taken to travel the whole journey
= 8 + 5
= 13 h
(b)
13 h after 8.45 a.m. = 9.45 p.m.
Answer(s): (a) 13 h; (b) 9.45 p.m.