Marion left home at 6.30 a.m. and drove towards the city which was 825 km away. For the first 267 km, she was travelling at 89 km/h. Then she increased her speed by 4 km/h and completed the remaining journey.
- How long did she take for her whole journey?
- At what time did she reach the city?
(a)
Time taken to travel 267 km
= 267 ÷ 89
= 3 h
Distance of the remaining journey
= 825 - 267
= 558 km
Speed for remaining journey
= 89 + 4
= 93 km/h
Time taken to travel remaining journey
= 558 ÷ 93
= 6 h
Time taken to travel the whole journey
= 6 + 3
= 9 h
(b)
9 h after 6.30 a.m. = 3.30 p.m.
Answer(s): (a) 9 h; (b) 3.30 p.m.