A train passes a station platform in 36 sec and a man standing on the platform in 20 sec. If the speed of the train is 36 km/hr. What is the length of the platform? Choose the correct choice from the following choices:  A) 160  B) 240  C) 288  D) 277  E) 221
Speed = 36 * 5/18= 
<gadget id="calculator">36 * 5/18</gadget>
<output>10</output>
10 m/sec.   Length of the train= 10 * 20= 
<gadget id="calculator">10 * 20</gadget>
<output>200</output>
200 m.   Let the length of the platform be x m . Then,   (x + 200)/36= 10=&gt; x = 160 m.   160nswer: 160
<result>A</result>
A train passes a station platform in 36 sec and a man standing on the platform in 20 sec. If the speed of the train is 36 km/hr. What is the length of the platform?