# SOLUTION: A store mixes Kenyan coffee worth \$10 per kilogram and Venezuelan coffeee worth \$12 per kilogram. The mixture is to sell for \$11 per kilogram. Find how much of each should be used

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 Question 380549: A store mixes Kenyan coffee worth \$10 per kilogram and Venezuelan coffeee worth \$12 per kilogram. The mixture is to sell for \$11 per kilogram. Find how much of each should be used to make a 420-kilogram mixture.Answer by stanbon(57307)   (Show Source): You can put this solution on YOUR website!A store mixes Kenyan coffee worth \$10 per kilogram and Venezuelan coffeee worth \$12 per kilogram. The mixture is to sell for \$11 per kilogram. Find how much of each should be used to make a 420-kilogram mixture. ---- Using 2 variables you get: Equations: Quantity Eq: K + V = 420 kg Value Eq:: 10K + 12V = 11*420 ------------------------------------- Multiply thru the Quantity Eq by 10 to get: 10K + 10V = 10*420 ----- Subtract that from the Value Eq. and solve for "V": 2V = 420 V = 210 kg (amt. of Venezuelan cofee needed in the mixture) ---- Since K + V = 420, K = 210 kg (amt. of Kenyan coffee needed in the mix) ================================ Cheers, Stan H.