Question 313732
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