Two trains of lengths 156.62 and 100 meters are running on parallel lines with respective speeds of 30 km/hr and 36 km/hr. The time of crossing each other, if they run in the opposite direction is  Select the correct option: A) 322 sec B) 14 sec C) 11sec D) 13 sec E) 34 sec
Explanation:   Total distance to be covered = 156.62 + 100= 
<gadget id="calculator">156.62 + 100</gadget>
<output>256.62</output>
256.62 m   Trains are running in opposite directions, hence   Relative speed= 30 + 36= 
<gadget id="calculator">30 + 36</gadget>
<output>66</output>
66 km/hr= 18.33 m/sec   Time = Distance / Relative Speed   = 256.62 /18.33= 
<gadget id="calculator">256.62 /18.33</gadget>
<output>14</output>
14 sec   Therefore, the time of crossing each other in the opposite direction is 14 seconds.   ANSWER: 14 sec
<result>B</result>
Two trains of lengths 156.62 and 100 meters are running on parallel lines with respective speeds of 30 km/hr and 36 km/hr. The time of crossing each other, if they run in the opposite direction is