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lawnco produces three grades of commercial fertilizers. a 100 pound bag of grade A fertilizer contains 18 pound of nitrogen, 4 pound of phosphate, and 5 pound ofpotassium. a 100 pound bag of grade B fertilizer contains 20 pound of nitrogen, 4 pound of phosphate, and 4 pound of potassium. a 100 pound bag ofgrade C fertilizer contains 24 pound of nitrogen, 3 pound of phosphate, and 6 pound of potassium. how many 100 pound bags of each of the threegrade of fertilizers should Lawnco produce if 26400 pound of nitrogen, 4900 pound of phosphate, and 6200 pound of potassium are available and all the nutrients areused?

solve this problem suing the Gauss-Jordan elimination method.

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