SOLUTION: How many milliliters of water must be added to 60 mL of a 15% iodine solution in order to dilute it to a 10% iodine solution? This is a worksheet my teacher handed out and I am co

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Question 167911: How many milliliters of water must be added to 60 mL of a 15% iodine solution in order to dilute it to a 10% iodine solution?
This is a worksheet my teacher handed out and I am completely lost.

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
.15*60+0X=.10(60+X) THE AMOUNT X ADDED HAS NO IODINE JUST WATER.
9=6+.1X
.1X=9-6
.1X=3
X=3/.1
X=30 ML OF WATER IS NEEDED.
PROOF:
.15*60=.10(60+30)
9=.10*90
9=9