A car covers a distance of 60 km in 3 hours. However, for the first 40 km it travels 16 km/hr. At what speed must it travel for
the rest of the distance in order to complete the journey on time?
1 answer:
Answer:
40 km/hr
Step-by-step explanation:
Given that:
Total distance covered in 3 hours = 60km
Speed during first 40 km = 16km/hr
Hence, time spent during the first 40 km ;
Recall:
Time = distance / speed
Time = 40 / 16
Time = 2.5 hours
Hence, speed required to cover the remaining (60 - 40) = 20km in (3 - 2.5) hours =0.5 hours
Speed = distance / time
Speed = 20 / 0. 5
Speed = 40 km / hr
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