A) 46 min 12 s
B) 45 min
C) 42 min 36 s
D) 26 min 18 s
Correct Answer: A
Solution :
Required time = LCM OF 252, 308 AND 198 s Now, \[252=2\,\times 2\times 3\times 3\times 7\] \[308=2\times 2\times 7\times 11\] \[198=2\times 3\times 3\times 11\] \[\therefore \] \[LCM=2\times 2\times 3\times 3\times 7\times 11\] \[=36\times 77\,s\] \[=\frac{36\times 77}{60}\,\min \] \[=\frac{231}{5}=\,46\,\min \,12\,s\]You need to login to perform this action.
You will be redirected in
3 sec