A train 200m long passes a standing man in 10 seconds. What is the speed of the train?
Options:
A) 30km/hr  B) 36km/hr  C) 42km/hr  D) 50km/hr  E) 72km/hr
Speed of the train = 200/10* 18/5= 
<gadget id="calculator">200/10* 18/5</gadget>
<output>72</output>
72km/hr   Answer is 72km/hr
<result>E</result>
A train 200m long passes a standing man in 10 seconds. What is the speed of the train?