A can do a job in 18 days and B can do it in 30 days. A and B working together will finish twice the amount of work in ------- days?\nOptions:\n(A) 22 1/8 days\n(B) 22 1/2 days\n(C) 22 6/2 days\n(D) 72 1/2 days\n(E) 23 1/2 days Stream of consciousness:
User
1/18 + 1/30 = 8/90 = 4/45\n45/4 = 11 1/4 *2 = 22 1/2 days
Thus, the answer is (B).
Assistant