A) 10 hours
B) 12 hours
C) 16 hours
D) 18 hours
E) None of these
Correct Answer: B
Solution :
Explanation Option [b] is correct. Work done by A in 1 hour \[=\frac{1}{4}\] Work done by B and C in 1 hour \[=\frac{1}{3}\] Work done by A and C in 1 hour \[=\frac{1}{2}\] Work done by A,B and C in 1 hour \[=\left( \frac{1}{4} \right)+\left( \frac{1}{3} \right)=\frac{7}{12}\] Work done by B in 1 hour \[=\left( \frac{1}{12} \right)-\left( \frac{1}{2} \right)=\frac{1}{12}\] \[\Rightarrow \]B alone can complete the work in 12 hour
You need to login to perform this action.
You will be redirected in
3 sec
