Question 1178938
	percent	----------------	quantity												
Brand B	40	----------------			2	l									
Brand A	55	----------------			x	l									
Mixture	50	----------------	2	+	x	l									
															
	0.4	*	2		+	0.55	x	=	0.5	(		2	+		x)
															
	0.8	+	0.55		x=	1		+		0.5	x				
															
			0.05		x=	1		-	0.8						
			0.05		x=	0.2		-							
					x=	4		liters	Brand A