A 200m long train passes the 1.6km long bridge at 15mgs. How long does it take for the train to pass the bridge?

A 200m long train passes the 1.6km long bridge at 15mgs. How long does it take for the train to pass the bridge?

The distance for the train to completely pass the bridge: S = l bridge + L car = 1600m + 200m = 1800m, the time for the train to completely pass the bridge: T = SV = 1800m15m / S = 120s = 2min