A train passes a station platform in 36 sec and a man standing on the platform in 22 sec. If the speed of the train is 54 km/hr. What is the length of the platform?  Options.
A) 288  B) 210  C) 881  D) 1277  E) 121
Speed = 54 * 5/18= 
<gadget id="calculator">54 * 5/18</gadget>
<output>15</output>
15 m/sec.   Length of the train= 15 * 22= 
<gadget id="calculator">15 * 22</gadget>
<output>330</output>
330 m.   Let the length of the platform be x m . Then,   (x + 330)/36= 15 =&gt; x = 210 m.   Answer: 210
<result>B</result>
A train passes a station platform in 36 sec and a man standing on the platform in 22 sec. If the speed of the train is 54 km/hr. What is the length of the platform?