A) 5 days
B) 7 days
C) 11 days
D) 3 days
Correct Answer: A
Solution :
B's 1 day work \[=\frac{1}{12}\] B's 9 day's work \[=\frac{9}{12}=\frac{3}{4}\] Remaining work \[=1-\frac{3}{4}=\frac{1}{4}\] \[\therefore \] A can finish this work in \[\frac{20}{4}\] days = 5 daysYou need to login to perform this action.
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