Give stream of consciousness and then the final answer. Ravi can do a piece of work in 25 days while Prakash can do it in 35 days. In how many days will they finish it together?\nOptions:\n(A) 15 7/9 days\n(B) 16 17/9 days\n(C) 15 1/19 days\n(D) 14 7/12 days\n(E) 14 7/9 days
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1/25 + 1/35 = 12/175\n175/12 = 14 7/12 days
The final answer: (D).
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