Fabian drove from Town P to Town Q which was 444 km away. He started from Town P at an average speed of 60 km/h. He maintained this speed for 3 h before increasing it by 8 km/h for the rest of the journey to Town Q.
- How long did he take to complete the whole journey?
- What was his average speed from Town P to Town Q?
(a)
Distance of 1st part of the journey
= 3 x 60
= 180 km
New speed for rest of the journey
= 60 + 8
= 68 km / h
Remaining distance for rest of the journey
= 444 - 180
= 264 km
Time taken for rest of the journey
= 264 ÷ 68
= 3 h
Total time taken
= 3 + 3
= 6 h
(b)
Average speed of the whole journey
= 444 ÷ 6
= 74 km
Answer(s): (a) 6 h; (b) 74km/h