A) 12
B) 9
C) 15
D) 10
Correct Answer: B
Solution :
[b] A and B can complete work in 6 days A can complete in 18 days Let B can complete in x days \[\therefore \] One day work be equal to \[\frac{1}{6}=\frac{1}{18}+\frac{1}{x}\] \[\frac{1}{6}=\frac{x+18}{18x}\] \[3x=x+18\] \[x=9\,\,days\]You need to login to perform this action.
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