A man in a train travelling at 24km/hr notices that a train going in the opposite direction passes him in 10 sec.If the length of this train is 220m find its speed .	Pick one:
A) 30 km/hr
B) 40 km/hr
C) 55 km/hr
D) 60 km/hr
E) 70 km/hr
relative speed of trains = 220/10 mtrs/sec = 220*18/(10*5)= 79 km/hr   speed of 2nd train = 79-24= 
<gadget id="calculator">79-24</gadget>
<output>55</output>
55 km/hr   ANSWER:55 km/hr
<result>C</result>
A man in a train travelling at 24km/hr notices that a train going in the opposite direction passes him in 10 sec.If the length of this train is 220m find its speed .