Tammy left home at 10.10 a.m. and drove towards the mountain which was 1167 km away. For the first 516 km, she was travelling at 86 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 mountain?
(a)
Time taken to travel 516 km
= 516 ÷ 86
= 6 h
Distance of the remaining journey
= 1167 - 516
= 651 km
Speed for remaining journey
= 86 + 7
= 93 km/h
Time taken to travel remaining journey
= 651 ÷ 93
= 7 h
Time taken to travel the whole journey
= 7 + 6
= 13 h
(b)
13 h after 10.10 a.m. = 11.10 p.m.
Answer(s): (a) 13 h; (b) 11.10 p.m.