Esther left home at 9.35 a.m. and drove towards the mountain which was 884 km away. For the first 344 km, she was travelling at 86 km/h. Then she increased her speed by 4 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 344 km
= 344 ÷ 86
= 4 h
Distance of the remaining journey
= 884 - 344
= 540 km
Speed for remaining journey
= 86 + 4
= 90 km/h
Time taken to travel remaining journey
= 540 ÷ 90
= 6 h
Time taken to travel the whole journey
= 6 + 4
= 10 h
(b)
10 h after 9.35 a.m. = 7.35 p.m.
Answer(s): (a) 10 h; (b) 7.35 p.m.