Question 497522
	percent	----------------	quantity									
Orange juice I	30	----------------			4	gallons						
Orange juice II	60	----------------			x	gallons						
Mixture	50	----------------	4	+	x	gallons						
												
30	*	4	+	60	x	=	50	(	4	+	x	)
120	+	60	x	=	200	+	50	x				
60	x	+	-50	x	=	200	-	-120				
10	x	=	80									
/	10											
x	=	8										
		8	gallons		of	60	%	Orange juice II II