A train travelling at 36 km/hr crosses a pole in 25 sec. How much time (in sec) will it take to cross a bridge 350 m long?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 60
Speed = 36km/hr = 36 × 5/18 = 10m/sec.
Distance travelled by the train in 25 sec is nothing but the length of the train,
= 25 × 10 = 250m.
Time is taken by train to cross a bridge of 350m,
= (250 + 350)/10 = 60 sec.