A train 300m long takes 10 sec to cross a man walking at 5kmph in a direction opposite to that of the train. Find the speed of the train?
Choose the correct choice from the following options:
A) A)175kmph
B) B)113kmph
C) C)162kmph
D) D)145kmph
E) E)100kmph
Let the speed of the train be x kmph   Speed of the train relative to man = x+5 = (x+5)*5/18 m/sec   300/[(x+5)*5/18] = 10   10(x+5) = 60*18   x = 175kmph   Answer is 113kmph
<result>B</result>
A train 300m long takes 10 sec to cross a man walking at 5kmph in a direction opposite to that of the train. Find the speed of the train?