A man sitting in a train which is traveling at 56 kmph observes that a goods train, traveling in opposite direction, takes 15 seconds to pass him. If the goods train is 410 m long, find its speed  Answers:
A) 52 kmph	B) 56 kmph	C) 58 kmph	D) 42 kmph	E) 72 kmph
Explanation:   Relative speed = 410/15 m / sec = ((410/15)×(18/5)) kmph = 98 kmph.   Speed of goods train = (98 - 56)= 
<gadget id="calculator">(98 - 56)</gadget>
<output>42</output>
42 kmph   Answer: Option 42 kmph
<result>D</result>
A man sitting in a train which is traveling at 56 kmph observes that a goods train, traveling in opposite direction, takes 15 seconds to pass him. If the goods train is 410 m long, find its speed