SOLUTION: Have a 10% concentrate and need a .5% solution. How much water do I need to add to one fluid ounce of concentrate?

SOLUTION: Have a 10% concentrate and need a .5% solution. How much water do I need to add to one fluid ounce of concentrate?

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Question 736971: Have a 10% concentrate and need a .5% solution. How much water do I need to add to one fluid ounce of concentrate?
Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
.10*1=.005(1+X)
.10=.005+.005X
-.005X=.005-.10
-.005X=-.095
X=-.095/-.005
X=19 OZ. OF WATER IS USED.
PROOF:
.10*1=.005(1+19)
.10=.005*20
.1=.1
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