A man sitting in a train which is travelling at 80 kmph observes that a goods train, travelling in opposite direction, takes 9 seconds to pass him. If the goods train is 280 m long, find its speed?	Options:	A) 52 kmph.	B) 62 kmph.	C) 72 kmph.	D) 80 kmph.	E) 32 kmph.
Solution   Relative Speed	= (280 / 9)m/sec   = (280/9 x 18/5)   = 112 kmph.   Speed of the train	= (112 - 80)= 
<gadget id="calculator">(112 - 80)</gadget>
<output>32</output>
32 kmph.   Answer 32 kmph.
<result>E</result>
A man sitting in a train which is travelling at 80 kmph observes that a goods train, travelling in opposite direction, takes 9 seconds to pass him. If the goods train is 280 m long, find its speed?