Pamela left home at 7.10 a.m. and drove towards the theme park which was 1050 km away. For the first 420 km, she was travelling at 84 km/h. Then she increased her speed by 6 km/h and completed the remaining journey.
- How long did she take for her whole journey?
- At what time did she reach the theme park?
(a)
Time taken to travel 420 km
= 420 ÷ 84
= 5 h
Distance of the remaining journey
= 1050 - 420
= 630 km
Speed for remaining journey
= 84 + 6
= 90 km/h
Time taken to travel remaining journey
= 630 ÷ 90
= 7 h
Time taken to travel the whole journey
= 7 + 5
= 12 h
(b)
12 h after 7.10 a.m. = 7.10 p.m.
Answer(s): (a) 12 h; (b) 7.10 p.m.