A can do a work in 9 days and B can do the same work in 18 days. If they work together, in how many days will they complete the work?\nOptions:\n(A) 6 days\n(B) 7 days\n(C) 5 days\n(D) 3 days\n(E) 2 days Now, let's think a bit. Some random thoughts:
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One day's work of A and B = 1/9 + 1/8 = (2+1)/18 = 1/6 So, the time taken to complete the work is 6 days.
The final answer: (A).
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