Nicole left home at 6.15 a.m. and drove towards the city which was 1025 km away. For the first 444 km, she was travelling at 74 km/h. Then she increased her speed by 9 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 444 km
= 444 ÷ 74
= 6 h
Distance of the remaining journey
= 1025 - 444
= 581 km
Speed for remaining journey
= 74 + 9
= 83 km/h
Time taken to travel remaining journey
= 581 ÷ 83
= 7 h
Time taken to travel the whole journey
= 7 + 6
= 13 h
(b)
13 h after 6.15 a.m. = 7.15 p.m.
Answer(s): (a) 13 h; (b) 7.15 p.m.