How much time will a train of length 200 m moving at a speed of 72 kmph take to cross another train of length 300 m, moving at 36 kmph in the same direction? Select the correct option.
A) 50 sec  B) 25 sec  C) 40 sec  D) 65 sec  E) 60 sec
Explanation:   The distance to be covered = Sum of their lengths = 200 + 300= 
<gadget id="calculator">200 + 300</gadget>
<output>500</output>
500 m.   Relative speed= 72 -36= 
<gadget id="calculator">72 -36</gadget>
<output>36</output>
36 kmph= 36 * 5/18= 
<gadget id="calculator">36 * 5/18</gadget>
<output>10</output>
10 mps.   Time required= d/s = 500/10= 
<gadget id="calculator">500/10</gadget>
<output>50</output>
50 sec.   50 secNSWER IS 50 sec
<result>A</result>
How much time will a train of length 200 m moving at a speed of 72 kmph take to cross another train of length 300 m, moving at 36 kmph in the same direction?