The length of a brigade which a train 130 m long and traveling at 45kmph can cross in 30 seconds, is Choose the correct answer:
A) 196 mts
B) 220 mts
C) 230 mts
D) 245 mts
E) None of these
Explanation:   Let the length of the brigade is x mts   Then Distance = 130 + x mts   given speed = 45 kmph = 45 x5/18 m/s   Time = 30 sec   T = D/S   =&gt; 30 = 130+x/(45x5/18)   =&gt; x = 245 mts.   ANSWER IS 245 mts
<result>D</result>
The length of a brigade which a train 130 m long and traveling at 45kmph can cross in 30 seconds, is