A) 11 s
B) 10 s
C) 7 s
D) None of these
Correct Answer: A
Solution :
Relative speed of train \[= 40 + 32 = 72 km /h=20m/s\] Now, total distance travelled by train in crossing each other \[= 122 + 98 = 220 m\] \[\therefore \] Time taken to cross each other \[=\,\,\frac{220}{20}=11\,s\]You need to login to perform this action.
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