Topgrade Turf lawn seed mixture contains three types of seed: bluegrass, rye, and Bermuda. The costs per pound of the three types of seed are 19 cents, 13 cents, and 10 cents, respectively. In each batch there must be at least 25% bluegrass seed, and the amount of Bermuda must be no more than 2/3 the amount of rye. To fill current orders, the company must make at least 6000 lb of the mixture. How much of each kind of seed should the be used to minimize cost?

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