A train passes a platform in 16 seconds. The same train passes a man standing on the platform in 10 seconds. If the speed of the train is 54 km/hr, The length of the platform is	Choose the most appropriate option:
A) 40	B) 50	C) 90	D) 30	E) 20
Speed of the train = 54 km/hr = (54×10)/36 m/s = 15 m/s   Length of the train = speed × time taken to cross the man = 15×10 = 150 m   Let the length of the platform = L   Time taken to cross the platform = (150+L)/15   =&gt; (150+L)/15 = 16   =&gt; 150+L = 15×16 = 240   =&gt; L = 240-150= 
<gadget id="calculator">240-150</gadget>
<output>90</output>
90 meter   Answer is 90
<result>C</result>
A train passes a platform in 16 seconds. The same train passes a man standing on the platform in 10 seconds. If the speed of the train is 54 km/hr, The length of the platform is