One copy machine can make 30 copies a minute, and a second copy machine makes 20 copies a minute. If the two copiers work together, how long would it take them to make 2,000 copies?\nOptions:\n(A) 20 minutes\n(B) 40 minutes\n(C) 45 minutes\n(D) 50 minutes\n(E) 55 minutes Now, let's think a bit. Some random thoughts:
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Total work done by both machines in a minute = 30 + 20 = 50 copies\nTotal number of copies required = 2000\nTime = 2000/50 = 40 mins
The final answer: (B).
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