A train, 700 m long crosses a pole in 35 seconds. How much time does it take to cross a platform of length 740 m?
Answer & explanation
Correct answer: option 3
Length of train = 700 m
Time taken to cross a pole = 35 seconds
Speed of train = \(\frac{Distance}{Time}\)
= \(\frac{700}{35}\) = 20 m/sec
Time to cross bridge ,
Total distance = 700 + 740 = 1440 m
Time = \(\frac{Distance}{Speed }\)
= \(\frac{1440}{20}\) = 72 seconds
= 1 minute 12 seconds