A person has to cover a distance of 8 km in 1 hour. If he covers one-fourth of the distance in one-third of the total time, then what should his speed (in km/h) be to cover the remaining distance in the remaining time so that the person reaches the destination exactly on time?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 9.
Distance of 1st part= (1/4) × 8 = 2 km
Speed for first part = 2/(1/3) = 6 km/h
Remaining distance = 8 - 2 = 6 km
Remaining time = 2/3 hour
Required speed = 6/(2/3) = 9 km/h