A) 200 m
B) 245 m
C) 225 m
D) 250 m
Correct Answer: B
Solution :
Speed\[=45\,\,kmph=45\times \frac{5}{18}=12.5\,\,m/s\] Let, length of the bridge\[=x\,\,m\]; then \[\frac{130+x}{12.5}=30\] \[\Rightarrow \] \[130+x=375\] \[\therefore \] \[x=375-130=245\,\,m\].You need to login to perform this action.
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