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	Choose the correct choice
A) 270 m B) 245 m C) 235 m D) 220 m E) 240 m
Explanation:   Assume the 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   =&gt; 45 × (10/36) = (130+x)/30   =&gt; 45 × 10 × 30 /36 = 130+x   =&gt; 45 × 10 × 10 / 12 = 130+x   =&gt; 15 × 10 × 10 / 4 = 130+x   =&gt; 15 × 25 = 130+x = 375   =&gt; x = 375-130= 
<gadget id="calculator">375-130</gadget>
<output>245</output>
245   Answer: Option 245 m
<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