A) 16 min
B) 17 min
C) 18 min
D) 19 min
Correct Answer: D
Solution :
[d] \[(21-15)\,m\] i.e., 6 m is. covered in 1 min \[\Rightarrow \] \[114\,m\]will be covered in \[\left( \frac{1}{6}\times 114 \right)\,\min =19\,\min .\]You need to login to perform this action.
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