Question 417344
percent	----------------	quantity		
91.9	----------------	15.6
32.5	----------------	x
46	----------------	15.6+x
...
91.9*15.6+32.5*x	=46(15.6	+x)					
1433.64	+32.5x=717.6+46x					
32.5x-46	x=717.6-1433.64					
91.9*15.6+32.5*x	=46(15.6	+x)
1433.64	+32.5x=717.6+46x					
32.5x-46x=717.6-1433.64					
-13.5x=-716.04								
/-13.5									
x=53.04		

53.4+15.6=69 liters of 46%