A train is 130 m long. It travels at a speed of 45 km/h. It crosses a bridge in 30 seconds. The Length of Bridge is:

by

A. 245 m 
B. 220 m
C. 150 m
D. 180 m

🧠 Explanation (Math):

Given: Train length = 130 m; speed = 45 km/h; time = 30 s; find bridge length
Step 1: Convert speed: 45 km/h = 45 × (1000/3600) = 12.5 m/s
Step 2: Distance covered in 30 s = 12.5 × 30 = 375 m
Step 3: Distance = train + bridge ⇒ 375 = 130 + L ⇒ L = 245 m
Final Answer: 245 m