SOLUTION: a store mixes kenyan coffee worth $12 per kilogram and venezuelan coffee worth $15 per kilogram. The mixture is to sell for $13 per kilogram. Find out how much of each should be

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Question 563860: a store mixes kenyan coffee worth $12 per kilogram and venezuelan coffee worth $15 per kilogram. The mixture is to sell for $13 per kilogram. Find out how much of each should be used to make a 360 kilogram mixture.
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
price-----------uantity
Kenyan 12---------x lb
Venezuelan15------360-x
Mixture 13.00 ---------------- 360

12x+15(360-x)=13*360

12x+5400-15x=4680
12x-15x=4680-5400
-3x=-720
/ -3
x=240lb $12.00 Kenyan
120lb $15.00 Venezuelan
m.ananth@hotmail.ca