document.write( "Question 609660: A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. Combining 18 ounces of Solution A with 72ounces of Solution B gives 90 ounces of a mixture that is 80% salt. Combining 40 ounces of Solution A with 10 ounces of Solution B gives 50 ounces of a mixture that is 65% salt.
\n" ); document.write( "What are the percentages of salt in the two solutions?
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Algebra.Com's Answer #383876 by stanbon(75887)\"\" \"About 
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A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. Combining 18 ounces of Solution A with 72 ounces of Solution B gives 90 ounces of a mixture that is 80% salt.
\n" ); document.write( "Combining 40 ounces of Solution A with 10 ounces of Solution B gives 50 ounces of a mixture that is 65% salt.
\n" ); document.write( "What are the percentages of salt in the two solutions?
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\n" ); document.write( "Both Equations say salt + salt = salt
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\n" ); document.write( "18a + 72b = 80*90
\n" ); document.write( "40a + 10b = 65*50
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\n" ); document.write( "I used a matrix method to solve for a and b:
\n" ); document.write( "a = 60
\n" ); document.write( "b = 85
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\n" ); document.write( "The percentage of salt in solution A is 60%
\n" ); document.write( "The percentage of salt in solution B is 85%
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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