Question 803659
	percent	----------------			quantity							
acid solution I	50.00%	----------------			x	ml						
acid solution II	20.00%	------	150	-	x	ml						
Mixture	40.00%	----------------	150									
Total	150		ml									
50.00%	x	+	20.00%	(	150	-	x	)	=	40.00%	*	150
50	x	+	20	(	150	-	x	)	=	6000		
50	x	+	3000	-	20	x	=			6000		
50	x	-	20	x			=	6000	-	-3000		
30	x			=	3000							
/	30											
	x			=	100		ml			50.00%		acid solution I
												
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