Question 1154854

let cashews bought be x kg
and nuts bought be y kg 
x+y=12...……………….1
9x+4.5y = 6(x+y) 
9x +4.5y = 6x +6y 
3x-1.5y =0
multiply (1) by 1.5 
1.5x+1.5y=18..... (2) 
Add (1) & (2)
4.5x =18
x=4 kg
y= 8 kg