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Kemasan 25 = A
kemasan 50 = B
A + B = 215
B = 215 -A
25A + 50B = 8.625
25A + 50(215 -A) = 8.625
25A + 10.750 - 50A = 8.625
-25A = 8.625 - 10.750
-25A = -2.125
A(25kg) = 85 Karung
B(50kg) = 215 - 85 = 130 karung