document.write( "Question 1203490: Sornog is an alloy composed of gold and tustrite, but contains no motrium. Suppose yotril is an alloy that is composed of 75% gold, 13% tustrite, and 12% motrium. To make a trophy for a contest, some sornog is combined with some yotril to produce a trophy that is 72% gold, 20% tustrite, and 8% motrium. What is the percentage of gold in the sornog that was used to make the trophies? \n" ); document.write( "

Algebra.Com's Answer #839100 by josgarithmetic(39630) $\"\"$ $\"About$

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document.write( "                GOLD        TUSTRITE       MOTRIUM     totalpercents\r\n" );
document.write( "Sornog           g            t              0               100\r\n" );
document.write( "Yotril           75           13             12              100\r\n" );
document.write( "Trophy           72           20              8              100\r\n" );
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\n" ); document.write( "\n" ); document.write( "Look at the values for the Motrium. Notice that 8 is $\"2%2F3\"$ of 12. \r
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\n" ); document.write( "\n" ); document.write( "Imagine using 200 parts of Yotril and 100 parts Sornog.
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