Question: One copy machine can make 25 copies a minute, and a second copy machine makes 35 copies a minute. If the two copiers work together, how long would it take them to make 4,800 copies?\nOptions:\n(A) 30 minutes\n(B) 40 minutes\n(C) 60 minutes\n(D) 70 minutes\n(E) 80 minutes Random thoughts:
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Total work done by both machines in a minute = 25 + 35 = 60 copies\nTotal number of copies required = 6000\nTime = 4800/60 = 80 mins The final answer: (E).
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