Gem left home at 10.50 a.m. and drove towards the airport which was 914 km away. For the first 396 km, she was travelling at 66 km/h. Then she increased her speed by 8 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 396 km
= 396 ÷ 66
= 6 h
Distance of the remaining journey
= 914 - 396
= 518 km
Speed for remaining journey
= 66 + 8
= 74 km/h
Time taken to travel remaining journey
= 518 ÷ 74
= 7 h
Time taken to travel the whole journey
= 7 + 6
= 13 h
(b)
13 h after 10.50 a.m. = 11.50 p.m.
Answer(s): (a) 13 h; (b) 11.50 p.m.