If a person covers a distance of 180 km in 4 hours, find his speed in meters per second. MCQ with Answer and Explanation

Explanation:
Distance = Speed * Time = 300 * 4 = 1200 km. New time = 3 hours 20 minutes = 10/3 hours. New required speed = Distance / New time = 1200 / (10/3) = 1200 * 3 / 10 = 360 km/h.

Explanation:
The train takes 25 - 10 = 15 seconds to cover the length of the platform. Speed of the train = 300 / 15 = 20 m/s. Length of the train = Speed * Time to cross the man = 20 * 10 = 150 meters.

Explanation:
Let total distance be 100 km. First section = 40 km; Time = 40 / 20 = 2 hours. Second section = 60 km; Time = 60 / 30 = 2 hours. Total time = 4 hours. Average speed = 100 / 4 = 25 km/h.