A) 60 s
B) 80 s
C) 400 s
D) 40 s
Correct Answer: B
Solution :
[b] Distance\[=400\,m\] and Relative speed of both the donkeys \[=3+2=5\,m/s\] \[\therefore \] Time to meet both the donkeys \[=\frac{400}{5}=80\,s\] |
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