A and B together can do a work in 6 days. If A alone can do it in 15 days. In how many days can B alone do it?\nOptions:\n(A) 7\n(B) 13\n(C) 19\n(D) 10\n(E) None Stream of consciousness first, then make a decision:
User
1/6 â€“ 1/15 = 1/10\nB can do the work in 10 days
Thus, the answer is (D).
Assistant