document.write( "Question 890580: Two alloys A and B are composed of two basic elements. The ratios of the components of the two basic elements in the two alloys are 5:3 and 1:2 respectively. A new alloy X is formed by mixing the two alloys A and B in the ratio 4:3.What is the ratio of the compositions of the two basic elements in alloy X. \n" ); document.write( "
Algebra.Com's Answer #539093 by josgarithmetic(39617)\"\" \"About 
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Ratio of the two elements as x:y, assuming based on masses.\r
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\n" ); document.write( "\n" ); document.write( "Let p = how much of alloy A
\n" ); document.write( "Let v = how much of alloy B\r
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\n" ); document.write( "\n" ); document.write( "Concentration of x in alloy A, \"5%2F8\"
\n" ); document.write( "Concentration of y in alloy A, \"3%2F8\"
\n" ); document.write( "Concentration of x in alloy B, \"1%2F3\"
\n" ); document.write( "Concentration of y in alloy B, \"2%2F3\"\r
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\n" ); document.write( "\n" ); document.write( "THE MIXTURE TO PREPARE
\n" ); document.write( "Concentration of x in mixture, \"4%2F7\"
\n" ); document.write( "Concentration of y in mixture, \"3%2F7\"\r
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\n" ); document.write( "\n" ); document.write( "Account for material x: \"highlight%28%285%2F8%29p%2B%281%2F3%29v=4%2F7%29\"\r
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\n" ); document.write( "\n" ); document.write( "Account for material y: \"highlight%28%283%2F8%29p%2B%282%2F3%29v=3%2F7%29\"\r
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\n" ); document.write( "\n" ); document.write( "The \"account\" equations are a system of two linear equations in two unknowns. Solve any way you like or know.---------- or, continuing,\r
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\n" ); document.write( "\n" ); document.write( "Lowest common denominator of those two equations is \"3%2A7%2A8\". Multiplying all members by LCD and simplifying, and solving the two equations will give:
\n" ); document.write( "\"highlight%28p=40%2F49%29\" AND \"highlight%28v=9%2F49%29\".
\n" ); document.write( "The complete solution is still not finished but this is a long way done for finding the answer to the question,\"ratio of the two basic elements in the alloy X\". Knowing p and v, you only know how much of the two alloys to use.
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\n" ); document.write( "Actually, you already know the ratio of the two basic elements because they were given in the problem description. The best question, now answered, was HOW MUCH OF ALLOY A AND ALLOY B to use. This ratio is 40 parts of A to 9 parts of B.
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