Eva left home at 8.10 a.m. and drove towards the airport which was 1124 km away. For the first 348 km, she was travelling at 87 km/h. Then she increased her speed by 10 km/h and completed the remaining journey.
- How long did she take for her whole journey?
- At what time did she reach the airport?
(a)
Time taken to travel 348 km
= 348 ÷ 87
= 4 h
Distance of the remaining journey
= 1124 - 348
= 776 km
Speed for remaining journey
= 87 + 10
= 97 km/h
Time taken to travel remaining journey
= 776 ÷ 97
= 8 h
Time taken to travel the whole journey
= 8 + 4
= 12 h
(b)
12 h after 8.10 a.m. = 8.10 p.m.
Answer(s): (a) 12 h; (b) 8.10 p.m.