<PRE><B>Question 1201992</B>
A dairy farmer wants to mix a 45%
protein supplement and a standard 20%
protein ration to make 2000
pounds of a high-grade 35%
protein ration. How many pounds of each should he use?

component	percent	----------------			quantity								
Protein A	0.45	----------------			x	lbs							
Protein B	0.2	----------------	2000	-	x	lbs							
Mixture	0.35	----------------	2000										
													
0.45	x	+	0.2	(	2000	-	x	)	=	2000.00	*	0.35	
													
0.45	x	+	400	-	0.2	x	=			700.00			
0.45	x	-	0.2	x			=	700	-	400			
0.25	x			=	300								
/	0.25												
	x			=	1200		lbs			45.00%		Protein A	
					800		lbs			20.00%		Protein B	

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