A train passes a station platform in 34 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/hr, what is the length of the platform?  Pick:
A) 228
B) 210
C) 188
D) 266
E) 281
The speed of the train is 54 * 5/18 m/s = 15 m/s   The length of the train is 15 x 20 = 300 m   platform + 300 = 15 * 34= 
<gadget id="calculator">15 * 34</gadget>
<output>510</output>
510 - 300= 
<gadget id="calculator">510 - 300</gadget>
<output>210</output>
210   The answer is 210.
<result>B</result>
A train passes a station platform in 34 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/hr, what is the length of the platform?