A person has to cover a distance of 160 km in 15 hours. If he covers of the distance in of the time, then what should be his speed (in km/h) to cover the remaining distance in the remaining time?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 6.4
Concept
Distance = Speed x Time
Application
Total distance to be covered = 160 km
He covered 4 / 5 of the distance, distance left to be covered = 1/ 5
= 160 x 1/ 5 = 32 km
Time taken by him alread 2 / 3 of the total time, he needs to cover the remaining distance in 1 / 3 of the total time
= 15 x 1 /3 = 5 hours
Therefore his speed should be = 32 / 5 = 6.4 km/h