A Cafe owner purchases 2 kinds of Kopi Luwak coffee beans-one at $320 per pound, and the other, an even better quality, at $400 per pound. He mixes together some of each, and he plans on selling this mix at $430 per pound. In doing so, he plans to make a profit of 25% on the cost. How many pounds of each kind of coffee must he use to make a mixture of a hundred pounds weight?
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