Xylia left home at 10.50 a.m. and drove towards the city which was 728 km away. For the first 352 km, she was travelling at 88 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 city?
(a)
Time taken to travel 352 km
= 352 ÷ 88
= 4 h
Distance of the remaining journey
= 728 - 352
= 376 km
Speed for remaining journey
= 88 + 6
= 94 km/h
Time taken to travel remaining journey
= 376 ÷ 94
= 4 h
Time taken to travel the whole journey
= 4 + 4
= 8 h
(b)
8 h after 10.50 a.m. = 6.50 p.m.
Answer(s): (a) 8 h; (b) 6.50 p.m.