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3 machines. You can see this easily by saying 6 machines copy 30,000 sheets in 5 days, so 1 machine must copy 5,000 sheets in 5 days. If we want to make 30,000 sheets in 10 days, that means we want to make 15,000 sheets in 5 days. If 1 machine makes 5,000 sheets in 5 days, then we need 3 machines to make 15,000 sheets in 5 days, and 3 machines to make 30,000 sheets in 10 days.

So we need 3 machines. Hope this helps!

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13y ago

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