Marion left home at 10.25 a.m. and drove towards the theme park which was 980 km away. For the first 308 km, she was travelling at 77 km/h. Then she increased her speed by 7 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 308 km
= 308 ÷ 77
= 4 h
Distance of the remaining journey
= 980 - 308
= 672 km
Speed for remaining journey
= 77 + 7
= 84 km/h
Time taken to travel remaining journey
= 672 ÷ 84
= 8 h
Time taken to travel the whole journey
= 8 + 4
= 12 h
(b)
12 h after 10.25 a.m. = 10.25 p.m.
Answer(s): (a) 12 h; (b) 10.25 p.m.