Question 537492
percent		----------------			quantity								
Pure acid	100	----------------			x	grams							
Acid 	40	------	30	-	x	grams							
Mixture	60.00%	----------------	30										
													
100	x	+	40	(	30	-	x	)	=	60	*	30	
													
100x+1200-40x=	1800			
100	x	-	40	x=1800	-	1200			
60	x			=	600								
/	60												
x=	10		grams			100.00%		Pure acid
	
					20		grams			40.00%		acid