Student: 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 1/6\n(B) 22 1/2\n(C) 22 1/0\n(D) 22 1/9\n(E) 22 1/1.
Another student: Let's say, hmmm...

User
1/18 + 1/30 = 8/90 = 4/45\n45/4 = 11 1/4 *2 = 22 1/2 days Final answer: (B).
Assistant