<PRE><B>Question 980554</B>
add water to some amount of alcohol yet maintain the 70% level.
 Average spray bottles likely hold about 25 fl ounces or what about 800 ml?
 What should my solution look like?
:
let x = amt of alcohol to be removed and amt of water to be added
Lets use an amt of alcohol to be 25 oz
25 - x  = .7(25) 
25 - x = 17.5
-x = 17.5 - 25
-x = -7.5
x = 7.5 oz of alcohol removed and 7.5 oz of water added maintaining a 25 oz bottle</PRE>