Two trains are running in opposite directions with the same speed. If the length of each train is 100 m and they cross each other in 12 sec, then the speed of each train is? Choose the correct answer:  A) 30  B) 35  C) 36  D) 37  E) 38
Let the speed of each train be x m/sec.   Then, relative speed of the two trains = 2x m/sec.   So, 2x = (100 + 100)/12 =&gt; x = 8.33   Speed of each train = 10 m/sec.   = 8.33 * 18/5 = 30 km/hr.   30nswer: Option 30
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Two trains are running in opposite directions with the same speed. If the length of each train is 100 m and they cross each other in 12 sec, then the speed of each train is?