A) 24 days
B) 22 days
C) 20 days
D) 18 days
Correct Answer: A
Solution :
[a] 1 day work of\[A+B=\frac{1}{12}\] \[\therefore \]5 days work of \[A+B=\frac{1}{12}\times 5=\frac{5}{12}\] Now, time taken by A to do\[\frac{7}{12}\] work =14 days \[\therefore \]Time taken by A to do 1 work \[=\frac{14}{\frac{7}{12}}=\frac{14\times 12}{7}=24\,\text{days}\] Hence, A alone can complete the work in 24 days. |
You need to login to perform this action.
You will be redirected in
3 sec