A train passes a station platform in 25 seconds and a man standing on the platform in 12 seconds. If the speed of the train is 72 km/hr, what is the length of the platform? Answers
A) 220 B) 240 C) 260 D) 280 E) 300
The speed of the train is 72 * 5/18 m/s = 20 m/s   The length of the train is 20 x 12 = 240 m   platform + 240 = 20 * 25= 
<gadget id="calculator">20 * 25</gadget>
<output>500</output>
500 - 240= 
<gadget id="calculator">500 - 240</gadget>
<output>260</output>
260   The answer is 260.
<result>C</result>
A train passes a station platform in 25 seconds and a man standing on the platform in 12 seconds. If the speed of the train is 72 km/hr, what is the length of the platform?