Yoko left home at 5.25 a.m. and drove towards the mountain which was 1038 km away. For the first 352 km, she was travelling at 88 km/h. Then she increased her speed by 10 km/h and completed the remaining journey.
- How long did she take for her whole journey?
- At what time did she reach the mountain?
(a)
Time taken to travel 352 km
= 352 ÷ 88
= 4 h
Distance of the remaining journey
= 1038 - 352
= 686 km
Speed for remaining journey
= 88 + 10
= 98 km/h
Time taken to travel remaining journey
= 686 ÷ 98
= 7 h
Time taken to travel the whole journey
= 7 + 4
= 11 h
(b)
11 h after 5.25 a.m. = 4.25 p.m.
Answer(s): (a) 11 h; (b) 4.25 p.m.