document.write( "Question 1011921: How many grams of metal worth P500 a gram should be mixed with 20 grams of metal worth P320 per gram to produce an alloy worth P400 a gram?
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Algebra.Com's Answer #627743 by josgarithmetic(39621)\"\" \"About 
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x, how many grams of the P500 metal.\r
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\n" ); document.write( "\n" ); document.write( "\"500x%2B20%2A320=%28x%2B20%29%2A400\"\r
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\n" ); document.write( "\n" ); document.write( "Look through and study for clear understanding:
\n" ); document.write( "One quantity unknown but other known for two-part mixture
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