A train passes a station platform in 62 sec and a man standing on the platform in 20 sec. If the speed of the train is 54 km/hr. What is the length of the platform?  Select: A) 615 m B) 240 m C) 168 m D) 444 m E) 691 m
Speed = 54 * 5/18= 
<gadget id="calculator">54 * 5/18</gadget>
<output>15</output>
15 m/sec.   Length of the train= 15 * 20= 
<gadget id="calculator">15 * 20</gadget>
<output>300</output>
300 m.   Let the length of the platform be x m . Then,   (x + 300)/62= 15 =&gt; x   = 444 m   Answer: 444 m
<result>D</result>
A train passes a station platform in 62 sec and a man standing on the platform in 20 sec. If the speed of the train is 54 km/hr. What is the length of the platform?