A high-speed train covers 450 km in 3 hours. Find its speed in meters per second. MCQ with Answer and Explanation

Explanation:
Time = 3 hours 20 minutes = 3 + 20/60 = 3.333 hours = 10/3 hours. Speed = Distance / Time = 240 / (10/3) = 240 * 3 / 10 = 72 km/h.

Explanation:
Let each third segment distance be 40 km. Total sector distance = 120 km. Total time = 40/20 + 40/40 + 40/40 = 2 + 1 + 1 = 4 hours. Average speed across route = 120 / 4 = 30 km/h.

Explanation:
Total time for full trip = 240 / 60 = 4 hours. Time spent on first 120 km = 120 / 40 = 3 hours. Remaining time for the last 120 km = 4 - 3 = 1 hour. Required speed = 120 km / 1 hour = 120 km/h.