Tina left home at 5.45 a.m. and drove towards the city which was 1040 km away. For the first 328 km, she was travelling at 82 km/h. Then she increased her speed by 7 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 328 km
= 328 ÷ 82
= 4 h
Distance of the remaining journey
= 1040 - 328
= 712 km
Speed for remaining journey
= 82 + 7
= 89 km/h
Time taken to travel remaining journey
= 712 ÷ 89
= 8 h
Time taken to travel the whole journey
= 8 + 4
= 12 h
(b)
12 h after 5.45 a.m. = 5.45 p.m.
Answer(s): (a) 12 h; (b) 5.45 p.m.