Diana left home at 8.45 a.m. and drove towards the theme park which was 755 km away. For the first 270 km, she was travelling at 90 km/h. Then she increased her speed by 7 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 270 km
= 270 ÷ 90
= 3 h
Distance of the remaining journey
= 755 - 270
= 485 km
Speed for remaining journey
= 90 + 7
= 97 km/h
Time taken to travel remaining journey
= 485 ÷ 97
= 5 h
Time taken to travel the whole journey
= 5 + 3
= 8 h
(b)
8 h after 8.45 a.m. = 4.45 p.m.
Answer(s): (a) 8 h; (b) 4.45 p.m.