The length of the bridge, which a train 130 m long and traveling at 45 km/hr can cross in 30 sec is?  Choose the correct choice from the following.
A) 288
B) 269
C) 245
D) 888
E) 121

Rationale: "speed = 45 * 5 / 18 = 25 / 2 m / sec . time = 30 sec let the length of bridge be x meters . then , ( 130 + x ) / 30 = 25 / 2 x = 245 m . answer : c"
Answer: C