<PRE><B>Question 552104</B>
percent		----------------			quantity								
Acid type I	60	----------------			x	Cm^3							
Acid type II	20	----------------	80	-	x	Cm^3							
Mixture	45.00%	----------------	80										
													
60	x	+	20	(	80	-	x	)	=	45	*	80	
													
60x+1600-20x=3600			
60x-20x	=3600-1600			
40x	=2000								
/	40												
x	=	50Cm^3			60.00%		Acid type I	
30		Cm^3			20.00%		Acid type II	
</PRE>