Two trains are running at 40 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 8 seconds. What is the length of the fast train?  Select the correct option
A) 23 m B) 44 (4/9)m C) 27 (7/9)m D) 29 m E) 28 m
Relative speed = (40 - 20) km/hr =	(20 x(5/18))m/sec =	(50/9)m/sec.   Therefore Length of faster train =	((50/9)	x 8) m =	(400/9)m = 44	(4/9)	m.   44 (4/9)m
<result>B</result>
Two trains are running at 40 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 8 seconds. What is the length of the fast train?