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A train traveling at a speed of 66 km/hr crosses a 465 m long bridge in 33 seconds. How long was the train?
1. 240 m 
2. 160 m 
3. 180 m 
4. 140 m 

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Correct Answer - Option 4 : 140 m 

Given:

Speed of train = 66 km/hr

Length of bridge = 465 m

Time taken to cross the bridge = 33 sec

Formula used:

Distance = Speed × Time

Calculation:

Let the length of the train = x m

Distance covered by the train = length of train + length of bridge

⇒ Distance = (x + 465) m

As, Distance = Speed × Time

x + 465 = [66 × (5/18)] × 33

⇒ x + 465 = 605 

⇒ x = 605 – 465 = 140 m

∴ Length of the train is 140 m

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