document.write( "Question 900782: How many ounces of pure gold that costs $850 per ounce must be mixed with 25 ounces of a gold alloy that costs $500 per ounce to make a new alloy that costs $725 per ounce? \n" ); document.write( "
Algebra.Com's Answer #546142 by richwmiller(17219)\"\" \"About 
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850*x+500*25=725(25+x)
\n" ); document.write( "850*x+12500=18125+725x
\n" ); document.write( "850x-725x=18125-12500
\n" ); document.write( "125x=5625
\n" ); document.write( "x=45 ounces
\n" ); document.write( "check
\n" ); document.write( "850*45+500*25=725(25+45)
\n" ); document.write( "38250+12500=725(70)
\n" ); document.write( "50750=50750
\n" ); document.write( "ok\r
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