Diana left home at 6.30 a.m. and drove towards the theme park which was 801 km away. For the first 276 km, she was travelling at 69 km/h. Then she increased her speed by 6 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 276 km
= 276 ÷ 69
= 4 h
Distance of the remaining journey
= 801 - 276
= 525 km
Speed for remaining journey
= 69 + 6
= 75 km/h
Time taken to travel remaining journey
= 525 ÷ 75
= 7 h
Time taken to travel the whole journey
= 7 + 4
= 11 h
(b)
11 h after 6.30 a.m. = 5.30 p.m.
Answer(s): (a) 11 h; (b) 5.30 p.m.