Emma left home at 6.10 a.m. and drove towards the theme park which was 783 km away. For the first 272 km, she was travelling at 68 km/h. Then she increased her speed by 5 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 272 km
= 272 ÷ 68
= 4 h
Distance of the remaining journey
= 783 - 272
= 511 km
Speed for remaining journey
= 68 + 5
= 73 km/h
Time taken to travel remaining journey
= 511 ÷ 73
= 7 h
Time taken to travel the whole journey
= 7 + 4
= 11 h
(b)
11 h after 6.10 a.m. = 5.10 p.m.
Answer(s): (a) 11 h; (b) 5.10 p.m.