Question 441789
	percent	----------------quantity							
Alcohol	40	----------------x							
Alcohol	90	----------------15-x 					
Total	80.00%	----------------15					
40x+90(15-x)=80	*15
		
40x+1350-90x=1200		
40x-90x	=1200-1350		
-50x=-150							
/-50										
x=3 liters	40.00%		
12 liters 90.00%