The length of a train and that of a platform are equal. If with a speed of 90 km/hr the train crosses the platform in one minute, then the length of the train (in meters) is ?

A. 500 meters

B. 600 meters

C. 750 meters

D. 900 meters

Answer: Option C

Solution(By Examveda Team)

$$\eqalign{ & {L_t} = {L_P} = l \cr & S = {\text{90 km /hr }} \cr & \,\,\,\,{\text{ = }}\frac{{90 \times 1000}}{{60}}{\text{ m/min}} \cr & \,\,\,\,\, = 1500\text{ m/min} \cr & \Rightarrow l = {L_t} = {L_P} = \frac{{1500}}{2} = 750{\text{ meters}} \cr} $$