The speed of a train is 88 km/h. How much time will it take to cross a 180 m long platform if length of the train is 150 m?
Answer & explanation
Correct answer: option 3
To convert km/h into m/sec
88 km/h x \(\frac{5}{18}\) = \(\frac{220}{9}\) m/sec
Total length = Length of Train+Length of Platform
Total length=150 m+180 m=330 m
We know that ,
Time = \(\frac{Distance}{Speed}\)
= \(\frac{330 × 9}{220}\)
= \(\frac{27}{2}\)
= 13\(\frac{1}{2}\) second