document.write( "Question 859722: In Mr Kings class, there are 2 girls for every 3 boys. If he has 30 children in his class, how many are girls?
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Algebra.Com's Answer #517916 by jim_thompson5910(35256)\"\" \"About 
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Let x = number of girls\r
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\n" ); document.write( "\n" ); document.write( "So there are 30-x boys\r
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\n" ); document.write( "\n" ); document.write( "\"2%2F3+=+x%2F%2830-x%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"2%2830-x%29+=+3x\"\r
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\n" ); document.write( "\n" ); document.write( "\"60-2x+=+3x\"\r
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\n" ); document.write( "\n" ); document.write( "\"60+=+3x%2B2x\"\r
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\n" ); document.write( "\n" ); document.write( "\"60+=+5x\"\r
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\n" ); document.write( "\n" ); document.write( "\"60%2F5+=+x\"\r
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\n" ); document.write( "\n" ); document.write( "\"12+=+x\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+12\"\r
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\n" ); document.write( "\n" ); document.write( "There are 12 girls in the class.
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