A train 108 m long is moving at a speed of 50 km/hr . It crosses a train 112 m long coming from opposite direction in 6 seconds. What is the speed of the second train?
Choose the correct choice from the following answers
A) 81km/hr
B) 80km/hr
C) 82km/hr
D) 85km/hr
E) 84km/hr
Total distance = 108+112= 
<gadget id="calculator">108+112</gadget>
<output>220</output>
220 m   Time= 6s   Relative speed = distance/time = 220/6 m/s = 110/3 m/s   = (110/3) × (18/5) km/hr = 132 km/hr   =&gt; 50 + speed of second train = 132 km/hr   =&gt; Speed of second train = 132-50= 
<gadget id="calculator">132-50</gadget>
<output>82</output>
82 km/hr   Answer is 82km/hr.
<result>C</result>
A train 108 m long is moving at a speed of 50 km/hr . It crosses a train 112 m long coming from opposite direction in 6 seconds. What is the speed of the second train?