A train has a length of 150 metres. It is passing a man who is moving at 2 km/hr in the same direction of the train, in 3 seconds. Find out the speed of the train.  Choose the correct answer:
A) 152 km/hr B) 178 km/hr C) 182 km/hr D) 172 km/hr E) 142 km/hr
Length of the train = 150 m   Speed of the man =2 km/hr   Relative speed = 153/3=50 m/s   =50Ã—18/5=180 km/hr   Relative speed = Speed of train - Speed of the man (as both are moving in the same direction).   Therefore,Speed of the train = Relative speed + Speed of the man=180+2= 
<gadget id="calculator">180+2</gadget>
<output>182</output>
182 km/hr   ANSWER:182 km/hr
<result>C</result>
A train has a length of 150 metres. It is passing a man who is moving at 2 km/hr in the same direction of the train, in 3 seconds. Find out the speed of the train.