A) 24
B) 27
C) 30
D) 36
Correct Answer: B
Solution :
Difference of time \[=6\,\,\min \,\,-5\min \,\,52\,\,s=8\,\,s\] Distance covered by man in 5 min 52 s =Distance covered by sound in \[85=330\times 8=2640\,\,\text{m}\] \[\therefore \] Speed of man \[=\frac{2640\,\,\text{m}}{5\,\,\min 52\,\,\text{s}}=\frac{2640}{352}\,\,\text{m/s}\] \[=\frac{2640}{352}\times \frac{18}{5}\,\,\text{km/h}=27\text{km/h}\]You need to login to perform this action.
You will be redirected in
3 sec