Question 695706
	price	----------------			quantity									
Nuts type I	0.8	----------------			x	lb								
Nuts Type II	0.5	------	30	-	x	lb								
Mixture	0.75	----------------	30											
	30													
0.8	x	+	0.5	(	30	-	x	)	=	0.75	*	30		
80	x	+	50	(	30	-	x	)	=	2250				
80	x	+	1500	-	50	x	=			2250				
80	x	-	50	x			=	2250	-	-1500				
30	x			=	750									
/	30													
	x			=	25		lb			0.80		Nuts type I		
					5		lb			0.50		Nuts Type II		
														
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