A passenger express train 160 meters long runs at 72 km/h. How long will it take to clear a terminal platform 240 meters long? MCQ with Answer and Explanation

Explanation:
Time for outward journey = 180 / 45 = 4 hours. Time for return journey = 180 / 60 = 3 hours. Total time = 4 + 3 = 7 hours.

Explanation:
Downstream speed = 36 / 3 = 12 km/h. Upstream speed = 18 / 3 = 6 km/h. Speed in still water = (12 + 6) / 2 = 9 km/h.

Explanation:
Let each third of the distance be 60 km. Total distance = 180 km. Total time taken = 60/15 + 60/30 + 60/60 = 4 + 2 + 1 = 7 hours. Average speed = 180 / 7 = 25.71 km/h.