Two trains, each 100 metre long are moving in opposite directions. They cross each other in 8 seconds. If one is moving twice as fast the other, the speed of the faster train is  Answers
A) 65 km/hr	B) 60 km/hr	C) 45 km/hr	D) 75 km/hr	E) 80 km/hr
tot dist = (100+100)= 
<gadget id="calculator">(100+100)</gadget>
<output>200</output>
200 m   time= 8 sec   let speed of slower train = vm/s   then speed of the faster train = 2vm/s   relative speed = (v+2v)=3v m/s   3v=200/8= 
<gadget id="calculator">200/8</gadget>
<output>25</output>
25/3   speed of the faster train= 2v = 50/3 m/s   50/3*8/5km/hr = 60km/hr   ANSWER 60 km/hr
<result>B</result>
Two trains, each 100 metre long are moving in opposite directions. They cross each other in 8 seconds. If one is moving twice as fast the other, the speed of the faster train is