Kathy left home at 5.40 a.m. and drove towards the theme park which was 576 km away. For the first 300 km, she was travelling at 60 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 300 km
= 300 ÷ 60
= 5 h
Distance of the remaining journey
= 576 - 300
= 276 km
Speed for remaining journey
= 60 + 9
= 69 km/h
Time taken to travel remaining journey
= 276 ÷ 69
= 4 h
Time taken to travel the whole journey
= 4 + 5
= 9 h
(b)
9 h after 5.40 a.m. = 2.40 p.m.
Answer(s): (a) 9 h; (b) 2.40 p.m.