SOLUTION: a nurse wants to add water to 30 ounces of a 10% solution of benzakonium chloride to dilute it to an 8% solution how much water must she add?
I'm not sure if I doing it right
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Question 407187: a nurse wants to add water to 30 ounces of a 10% solution of benzakonium chloride to dilute it to an 8% solution how much water must she add?
I'm not sure if I doing it right
8(x+30) + 0.10x Found 2 solutions by mananth, lwsshak3:Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! percent ---------------- quantity
solution10 ---------------- 30
water 0 ---------------- x
Total 8 ---------------- 30+x
You can put this solution on YOUR website! a nurse wants to add water to 30 ounces of a 10% solution of benzakonium chloride to dilute it to an 8% solution how much water must she add?
..
letx=ounces of water to add
then 30+x=ounces of diluted solution
remember, when you add water, you are adding 0% solution
10%(30)+0%(x)=8%(30+x)
3=2.4+.08x
.08x=3-2.4=.6
x=7.5 ounces
ans:
The nurse must add 7.5 ounces of water to dilute to an 8% solution
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