Question 726508
7.50x+8.30(160-x)=8.00*160
7.50x+1328-8.30x=1280
-.8x=1280-1328
-.8x=-48
x=-48/-.8
x=60 pounds of Kona coffee is used.
160-60=100 pounds of Mexican coffee is used.
Proof:
7.50*60+8.30*100=8.00*160
450+830=1280
1280=1280