A can do a piece of work in 9 days. When he had worked for 2 days B joins him. If the complete work was finished in 8 days. In how many days B alone can finish the work?
Options:
(A) 18
(B) 77
(C) 66
(D) 54
(E) 12 Stream of consciousness:
8/9 + 6/x = 1
X = 54 days
Thus, the answer is (D).