Question 500265
	percent	----------------	quantity									
Acid solution I	35	----------------			120	liters						
Acid solution II	15	----------------			x	liters						
Mixture	22	----------------	120	+	x	liters						
												
35	*	120	+	15	x	=	22	(	120	+	x	)
4200	+	15	x	=	2640	+	22	x				
15	x	+	-22	x	=	2640	-	-4200				
-7	x	=	-1560									
/	-7											
x	=	222 6/7										
		222 6/7	liters		of	15	%	Acid solution II