A 400-m-long train is travelling at a speed of 60 km/h. How much time will it take to cross a 600-m-long bridge?

Correct option is A

Given:

Length of train = 400 m
Length of bridge = 600 m
Speed of train = 60 km/h

Formula Used:

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

Solution:

Total Distance = 400 + 600 = 1000 m

Time $$= \frac{1000}{60 \times \frac5{18}} = 60 s$$ = 1 min.