document.write( "Question 1172280: How many quarts of an 80% alcohol solution must be added to 10 quarts of a 50% alcohol solution to give a 70% solution? \n" ); document.write( "

Algebra.Com's Answer #797251 by josgarithmetic(39617) $\"\"$ $\"About$

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$\"0.5%2A10%2B0.8%2AQ=0.7%28Q%2B10%29\"$ \r
\n" ); document.write( "\n" ); document.write( "-\r
\n" ); document.write( "\n" ); document.write( " $\"0.7Q%2B7=0.8Q%2B5\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"2=0.1Q\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"Q=2%2F0.1\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"Q=20\"$ \n" ); document.write( "

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