<PRE><B>Question 501681</B>
	--------percent	----------------	quantity									
Antifreeze I	15	----------------			60	gal						
Antifreeze II	70	----------------			x	gal						
Mixture	60	----------------	60	+	x	gal						
												
15*60+70x=60(	60	+	x	)
900	+	70	x	=	3600	+	60	x				
70	x	+	-60	x	=	3600	-	-900				
10	x	=	2700									
/	10											
x	=	270										
		270	gal		of	70	%	Antifreeze II				
</PRE>