<PRE><B>Question 71073</B>
Let x=number of quarts of water to be added


The amount of pure alcohol before adding water = amount of pure alcohol after adding water.  So our equation to solve is:

6(.60)=(6+x)(.40)  clear parens

3.60=2.40+.4x  subtract 2.40 from both sides

3.60-2.40=2.40-2.40+.40x
1.20=.40x
x=3 qts-------------------------------answer

CK

6(.6)=9(.4)

3.6=3.6


Hope this helps-----ptaylor


</PRE>