A train ,130 meters long travels at a speed of 45 km/hr crosses a bridge in 30 seconds. The length of the bridge is	Options:
A) 235 m
B) 245 m
C) 247 m
D) 249 m
E) 252 m
length of the bridge = x meter   Total distance covered = 130+x meter   total time taken = 30s   speed = Total distance covered /total time taken = (130+x)/30 m/s   = 45 × (10/36) = (130+x)/30   = 45 × 10 × 30 /36 = 130+x   = 45 × 10 × 10 / 12 = 130+x   = 15 × 10 × 10 / 4 = 130+x   = 15 × 25 = 130+x = 375   = x = 375-130= 
<gadget id="calculator">375-130</gadget>
<output>245</output>
245
<result>B</result>
A train ,130 meters long travels at a speed of 45 km/hr crosses a bridge in 30 seconds. The length of the bridge is