SOLUTION: Type A sugar normally costs 75pesos per kilogram. It is mixed with Type B, which normally costs 80 pesos per kilogram, to form a mixture that costs 78pesos per kilogram. If there a

Question 313732: Type A sugar normally costs 75pesos per kilogram. It is mixed with Type B, which normally costs 80 pesos per kilogram, to form a mixture that costs 78pesos per kilogram. If there are 10 kilograms of the mixture, how many kilograms of Type A were used?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
let quantity of type A used be x price = 75 pesos
Type B = 10-x kgs. price =80 pesos
total =10 kg. price =78 pesos
..
equate the value of the sugars
75x+80(10-x)=10*78
5x+800-80x=780
-5x=-20
x=4 kgs - type A

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