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14-11-2016
Mathematics

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A lab technician mixed 26 milliliters of alcohol with 104 milliliters of water to make a solution. What percent of the solution was alcohol?

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mozarth11 mozarth11

14-11-2016

mistura = 26 ml + 104 ml = 130 ml

130................100%
26.....................x

130x = 260
x = 260/130
x = 2 --> 2% de álcool

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