Two trains, each 150 m long, moving in opposite directions, cross other in 8 sec. If one is moving twice as fast the other, then the speed of the faster train is?	Choose the correct choice from the following:  A) 90  B) 98  C) 60  D) 88  E) 12
Let the speed of the slower train be x m/sec.   Then, speed of the train = 2x m/sec.   Relative speed = ( x + 2x) = 3x m/sec.   (150 + 150)/8 = 3x =&gt; x = 25/2.   So, speed of the faster train = 50/2= 
<gadget id="calculator">50/2</gadget>
<output>25</output>
25 * 18/5= 
<gadget id="calculator">25 * 18/5</gadget>
<output>90</output>
90 km/hr.   90nswer:90
<result>A</result>
Two trains, each 150 m long, moving in opposite directions, cross other in 8 sec. If one is moving twice as fast the other, then the speed of the faster train is?