A man sitting in a train which is traveling at 40 kmph observes that a goods train, traveling in opposite direction, takes 9 seconds to pass him. If the goods train is 280 m long, find its speed.?	Choose the correct choice from the following.
A) 50 kmph
B) 58 kmph
C) 62 kmph
D) 65 kmph
E) 72 kmph
Relative speed = 280/9 m / sec = ((280/9)*(18/5))= 
<gadget id="calculator">((280/9)*(18/5))</gadget>
<output>112</output>
112 kmph.   Speed of goods train= (112 - 40)= 
<gadget id="calculator">(112 - 40)</gadget>
<output>72</output>
72 kmph.   Answer : 72 kmph
<result>E</result>
A man sitting in a train which is traveling at 40 kmph observes that a goods train, traveling in opposite direction, takes 9 seconds to pass him. If the goods train is 280 m long, find its speed.?