Question 423721
percent	----------------	quantity							
12	----------------	x							
20	----------------	100-x							
Total18.00%--------------100						......
12x+20(100-x)=18*100
12x+2000	-20x=1800		
12x-20x=	1800-2000		
-8x=-200							
/-8									
x=25 liters of	12.00%		

75 liters of 20.00%