Linda left home at 5.35 a.m. and drove towards the mountain which was 956 km away. For the first 375 km, she was travelling at 75 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 375 km
= 375 ÷ 75
= 5 h
Distance of the remaining journey
= 956 - 375
= 581 km
Speed for remaining journey
= 75 + 8
= 83 km/h
Time taken to travel remaining journey
= 581 ÷ 83
= 7 h
Time taken to travel the whole journey
= 7 + 5
= 12 h
(b)
12 h after 5.35 a.m. = 5.35 p.m.
Answer(s): (a) 12 h; (b) 5.35 p.m.