Question 857619
	Percent	----------------			quantity								
Solution I	40.00%	----------------			x	ml							
Solution II	61.00%	------	7	-	x	ml							
Mixture	55.00%	----------------	7										
Total	7		ml										
40.00%	x	+	61.00%	(	7	-	x	)	=	55.00%	*	7	
40	x	+	61	(	7	-	x	)	=	385			
40	x	+	427	-	61	x	=			385			
40	x	-	61	x			=	385	-	-427			
-21	x			=	-42								
/	-21												
	x			=	2		ml			40.00%		Solution I	
					5		ml			61.00%		Solution II	
													
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