document.write( "Question 122197: Sarah knew that forty percent of the mixture was calcium. If 300 kilograms of other elements was used, what was the total weight of the mixture? \n" ); document.write( "
Algebra.Com's Answer #89723 by edjones(8007)\"\" \"About 
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Let x be the total weight of the mixture.
\n" ); document.write( ".6x=300
\n" ); document.write( ".6x/.6=300/.6
\n" ); document.write( "x=500 kg.
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