A) 9 days
B) 6 days
C) 4 days
D) 3 days
Correct Answer: C
Solution :
One day's work of first son \[=\frac{1}{6}\] and one day's work of second son \[=\frac{1}{12}\] \[\therefore \] One day's work of them working together \[=\frac{1}{6}+\frac{1}{12}=\frac{2+1}{12}=\frac{1}{4}\] \[\therefore \] In 4 days father will finish the work.You need to login to perform this action.
You will be redirected in
3 sec