Multiple choice

A person has to cover a distance of 60 km in 5 hr. If he covers 1/4th of the journey in 3/5th of the time, what should be his speed to cover the remaining distance in the time left?

  1. 19.5 km/hr

  2. 20 km/hr

  3. 22.5 km/hr

  4. 37.5 km/hr

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Total distance = 60 km, total time = 5 hr. 1/4th distance = 15 km. Time taken = 3/5 * 5 = 3 hr. Remaining distance = 45 km. Remaining time = 2 hr. Required speed = 45 / 2 = 22.5 km/hr.

AI explanation

The person covers one fourth of the 60 km journey, which is 15 km, in three fifths of the 5 hours, leaving 2 hours to complete the trip. The remaining distance to cover is 45 km. Dividing this remaining distance by the remaining time gives the required speed of 45 divided by 2, which equals 22.5 km/hr. The result is 22.5 km/hr.