Victoria left home at 5.25 a.m. and drove towards the mountain which was 702 km away. For the first 370 km, she was travelling at 74 km/h. Then she increased her speed by 9 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 370 km
= 370 ÷ 74
= 5 h
Distance of the remaining journey
= 702 - 370
= 332 km
Speed for remaining journey
= 74 + 9
= 83 km/h
Time taken to travel remaining journey
= 332 ÷ 83
= 4 h
Time taken to travel the whole journey
= 4 + 5
= 9 h
(b)
9 h after 5.25 a.m. = 2.25 p.m.
Answer(s): (a) 9 h; (b) 2.25 p.m.