A) 58 s
B) 68 s
C) 78 s
D) 88 s
Correct Answer: D
Solution :
Total time \[=\frac{\text{Total}\,\text{distance}}{\text{Velocity}}\] Total distance = Length of train + Length of bridge =100 + 1000 = 1100 m \[t=\frac{1100}{12.5}=88\,s\]
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