A train passes a station platform in 36 sec and a man standing on the platform in 25 sec. If the speed of the train is 54 km/hr. What is the length of the platform?	Choose the correct choice.
A) 288 B) 165 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 * 25= 
<gadget id="calculator">15 * 25</gadget>
<output>375</output>
375 m.   Let the length of the platform be x m . Then,   (x + 375)/36= 15 =&gt; x = 165 m.   Answer: 165
<result>B</result>
A train passes a station platform in 36 sec and a man standing on the platform in 25 sec. If the speed of the train is 54 km/hr. What is the length of the platform?