Question 478103
percent	percentage	----------------			quantity								
Salt solution	12	----------------x	gallons							
Salt solution	20	----------------6-x	gallons							
Mixture	13.00%	----------------	6										
													
12x+20(6-x)=13*	6	
12x+120-20x=78			
12x-20x	=78-120			
-8x=-42								
/-8												
x=5.25		gallons			12.00%		Salt solution	
0.75		gallons			20.00%		Salt solution