Question

A train 220 m long is running at a speed of 36 km/hr. What time will it take to cross a 110 m long tunnel?

• A. 44 sec
• B. 54 sec
• C. 33 sec
• D. None of these

Answer 1

The correct option is C 33 sec

Length of the train = 220 m
Length of the tunnel = 110 m
Therefore, length of the train + length of the tunnel = (220 + 110) m = 330 m
Speed of the train = 36 km/hr
Speed of the train = 36 $\times$ $\frac{5}{18}$ m/sec = 10 m/sec
Therefore, time taken by the train to cross the tunnel = $\frac{330}{10}$ = 33 seconds.