Cindy left home at 8.45 a.m. and drove towards the theme park which was 878 km away. For the first 310 km, she was travelling at 62 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 theme park?
(a)
Time taken to travel 310 km
= 310 ÷ 62
= 5 h
Distance of the remaining journey
= 878 - 310
= 568 km
Speed for remaining journey
= 62 + 9
= 71 km/h
Time taken to travel remaining journey
= 568 ÷ 71
= 8 h
Time taken to travel the whole journey
= 8 + 5
= 13 h
(b)
13 h after 8.45 a.m. = 9.45 p.m.
Answer(s): (a) 13 h; (b) 9.45 p.m.