Ivory left home at 9.50 a.m. and drove towards the mountain which was 1185 km away. For the first 534 km, she was travelling at 89 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 534 km
= 534 ÷ 89
= 6 h
Distance of the remaining journey
= 1185 - 534
= 651 km
Speed for remaining journey
= 89 + 4
= 93 km/h
Time taken to travel remaining journey
= 651 ÷ 93
= 7 h
Time taken to travel the whole journey
= 7 + 6
= 13 h
(b)
13 h after 9.50 a.m. = 10.50 p.m.
Answer(s): (a) 13 h; (b) 10.50 p.m.