Ronald and Elan are working on an assignment. Ronald takes 6 hours to type 32 pages on a computer, while Elan takes 5 hours to type 40 pages. How much time will they take, working together on two different computers to type an assignment of 110 pages?\nOptions:\n(A) 3 hours\n(B) 6 hours\n(C) 4 hours\n(D) 8 hours\n(E) 10 hours Now, let's think a bit. Some random thoughts:
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Number of pages typed by Ronald in one hour = 32/6 = 16/3\nNumber of pages typed by Elan in one hour = 40/5 = 8\nNumber of pages typed by both in one hour = ((16/3) + 8) = 40/3\nTherefore, time taken by both to type 110 pages = 110 x 3/40 = 8 hours.
The final answer: (D).
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