A and B together can complete one-ninth of a job in a day. What is the difference between the maximum and minimum number of days A could take to complete the job alone, if A and B take whole number of days to complete the job alone?
A 45
B.60
C.80
D.90
E.Cannot be determined![]()
A 45
B.60
C.80
D.90
E.Cannot be determined