Question:
A train of 110m moving at a speed of 90 km/hr. How long will it take to cross a platform 90 m long.
A8 sec
B12 sec
C15 sec
D18 sec
Answer:
A. 8 sec
Explanation:
Speed = 90 km/hr = 90 x 5/18= 25 m/s time= distance/speed distance=110 + 90 = 200 m = 200/25 = 8 sec