The following fertilizers were mixed: 4 bags complete fertilizer (14-14-14), 3  bags ammophos (16-20-0) and 3 bags ammonium sulfate (21-0-0). What is  the resulting grade (% N, % P2O5, % K2O) of the resulting mixture? Total weight of mixture = ____________ kg Total weight of N = ____________ kg Total weight of P2O5 = ____________ kg Total weight of K2O = ____________ kg Resulting grade = _____ N, _____ P2O5, _____ K2O

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