Cindy left home at 7.30 a.m. and drove towards the airport which was 1186 km away. For the first 528 km, she was travelling at 88 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 528 km
= 528 ÷ 88
= 6 h
Distance of the remaining journey
= 1186 - 528
= 658 km
Speed for remaining journey
= 88 + 6
= 94 km/h
Time taken to travel remaining journey
= 658 ÷ 94
= 7 h
Time taken to travel the whole journey
= 7 + 6
= 13 h
(b)
13 h after 7.30 a.m. = 8.30 p.m.
Answer(s): (a) 13 h; (b) 8.30 p.m.