If a person travels at a speed of 48 km/h, he will reach his destination on time. He covers two-thirds of his journey in five-sixths of time. At what speed (in km/h) should he travel to cover the remaining distance to reach his destination on time?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 96
Let the total distance 3 km and the total time 6 hr
A person covers 2/3 of his journey in 5/6 of the time
Remaining speed = Remaining distance / remaining time = (3 - 2)/(6 - 5) = 1 km/h
Total speed = total distance / total time = 3/6 = 1/2
Now,
1/2 unit = 48 km/h
Remaining speed (1 unit) = 96 km/h