A train has 24 coaches, each 15 m long, and an engine 20 m long (ignore gaps). Running at 60 km/h, how long will it take to cross a 400 m long bridge?

Question

Accepted Answer

46.8 seconds. Train length = 24 × 15 + 20 = 380 m; distance = 780 m; speed = 50/3 m/s. Time = 780 × 3/50 = 46.8 s.

A train has 24 coaches, each 15 m long, and an engine 20 m long (ignore gaps). Running at 60 km/h, how long will it take to cross a 400 m long bridge?

Step-by-Step Solution

Master this topic in 30 minutes a day.

More Speed, Time & Distance practice