Esther left home at 6.15 a.m. and drove towards the theme park which was 624 km away. For the first 240 km, she was travelling at 60 km/h. Then she increased her speed by 4 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 240 km
= 240 ÷ 60
= 4 h
Distance of the remaining journey
= 624 - 240
= 384 km
Speed for remaining journey
= 60 + 4
= 64 km/h
Time taken to travel remaining journey
= 384 ÷ 64
= 6 h
Time taken to travel the whole journey
= 6 + 4
= 10 h
(b)
10 h after 6.15 a.m. = 4.15 p.m.
Answer(s): (a) 10 h; (b) 4.15 p.m.