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Arithmetic
Question

\( 3 \) fl. oz. of a \( 90 \% \) alcohol solution...

 \( 3 \) fl. oz. of a \( 90 \% \) alcohol solution was mixed with \( 6 fl \) . oz. of a \( 36 \% \) alcohol solution. Find the concentration of the new mixture. 

Answer

\(\frac { 3\times 90\% + 6\times 36\% } { 3+ 6} = 65.1\% \)

Solution
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