SOLUTION: To reduce 16 ounces of a 25% solution of antiseptic to a 10% solution, how much distilled water should a nurse add?

Question 450428: To reduce 16 ounces of a 25% solution of antiseptic to a 10% solution, how much distilled water should a nurse add?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
To reduce 16 ounces of a 25% solution of antiseptic to a 10% solution,
how much distilled water should a nurse add?
:
Let x = amt of distilled water
:
A simple equation
.25(16) = .10(x+16)
4 = .10x + 1.6
4 - 1.6 = .1x
2.4 = .1x
x =
x = 24 oz of distilled water
:
:
Prove this by seeing the amt of antiseptic is the same (only the % changes)
.25(16) = .10(24+16)
4 = .1(40)
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