document.write( "Question 323496: how many ounces of 30% hydrochloric acid solution and 80% hydrochloric acid solution must be mixed to get 10 ounces of 50% hydrochloric solution? \n" ); document.write( "

Algebra.Com's Answer #471070 by modi.kk91(20) $\"\"$ $\"About$

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first method is allegation rule\r
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\n" ); document.write( "\n" ); document.write( " 30% 80%\r
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\n" ); document.write( "\n" ); document.write( " 50%\r
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\n" ); document.write( "\n" ); document.write( " 80-50=30 and 50-30=20\r
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\n" ); document.write( "\n" ); document.write( "ratio=30:20=3:2===3x+2x=5x
\n" ); document.write( " ans is 3x=6
\n" ); document.write( " 2x=4\r
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\n" ); document.write( "\n" ); document.write( " 5x=10\r
\n" ); document.write( "\n" ); document.write( " x=2\r
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\n" ); document.write( "\n" ); document.write( "second method is\r
\n" ); document.write( "\n" ); document.write( " let ounces of 30%=x
\n" ); document.write( " and ounces of 80%=10-x\r
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\n" ); document.write( "\n" ); document.write( " 40%x+80%(10-x)=50%10
\n" ); document.write( " 40x+800-80x=500
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\n" ); document.write( " x=6
\n" ); document.write( " 10-6=4 \n" ); document.write( "

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