Question : How many seconds will a train 120 m long, running at the rate of 36 km/hr take to cross a bridge of 360 m in length?
Option 1: 48 sec
Option 2: 40 sec
Option 3: 46 sec
Option 4: 36 sec
Correct Answer: 48 sec
Solution : Distance to be covered = 120 + 360 = 480 m Speed = 36 km/h = 36 × $\frac{5}{18}$ = 10 m/sec $\therefore$ Time = $\frac{480}{10}$ = 48 sec Hence, the correct answer is 48 sec.
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