SOLUTION: 60ml mixture of alcohol and iodine is 2% iodine. How much alcohol must be evaporated away to leave a mixture that is 8% iodine?

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Question 402001: 60ml mixture of alcohol and iodine is 2% iodine. How much alcohol must be evaporated away to leave a mixture that is 8% iodine?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
0.02*60 - 0.00x = 0.08*(60 - x)
==>1.2 = 4.8 - 0.80x
==> 0.08x =3.6
==> x = 45 ml, the amount of alcohol that must be evaporated.