A train 500m long takes 10 sec to cross a man walking at 6 kmph in a direction opposite to that of the train. Find the speed of the train?  Choose the correct answer: A) A)175kmph B) B)150kmph C) C)162kmph D) D)176kmph E) E)100kmph
Let the speed of the train be x kmph   Speed of the train relative to man = x+6 = (x+6)*5/18 m/sec   500/[(x+6)*5/18] = 10   10(x+6) = 1800   x = 176kmph   Answer is 176kmph
<result>D</result>
A train 500m long takes 10 sec to cross a man walking at 6 kmph in a direction opposite to that of the train. Find the speed of the train?