A 600 m long train is running at the speed of 72 km/h. How much time will it take to cross a 200 m long bridge?

Correct option is D

Given:

Length of the train = 600 m

Speed of the train = 72 km/h

Length of the bridge = 200 m

Formula Used:

Time = $$\frac{\text{Total Distance}}{\text{Speed}}$$​

Solution:

Total Distance = 600 m + 200 m = 800 m

Time = ​$$\frac{800 \, \text{m}}{72 \times \frac{1000}{3600}\text{m/s}} = 40 \, \text{seconds}$$

​​