A passenger train 180 meters long is running at 60 km/h. How much time will it take to pass a platform of length 220 meters? MCQ with Answer and Explanation

Explanation:
Let the half distance be d. d / 50 + d / 30 = 5 => 8d / 150 = 5 => 8d = 750 => d = 93.75 km. Total distance = 2d = 187.5 km.

Explanation:
Let car speed be c, then train speed is 1.2c. Time difference = 120/c - 120/(1.2c) = 10/60 hour = 1/6 hour. 120/c * (1 - 1/1.2) = 1/6 => 120/c * (0.2/1.2) = 1/6 => 120/c * (1/6) = 1/6 => c = 120 km/h.

Explanation:
Total distance = 160 + 240 = 400 meters. Speed = 400 / 20 = 20 m/s. In km/h = 20 * (18/5) = 72 km/h.