Eva left home at 9.30 a.m. and drove towards the mountain which was 634 km away. For the first 258 km, she was travelling at 86 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 mountain?
(a)
Time taken to travel 258 km
= 258 ÷ 86
= 3 h
Distance of the remaining journey
= 634 - 258
= 376 km
Speed for remaining journey
= 86 + 8
= 94 km/h
Time taken to travel remaining journey
= 376 ÷ 94
= 4 h
Time taken to travel the whole journey
= 4 + 3
= 7 h
(b)
7 h after 9.30 a.m. = 4.30 p.m.
Answer(s): (a) 7 h; (b) 4.30 p.m.