document.write( "Question 271565: the ratio of boys to all students in sam middle school is 2:5. there are 123 girls in the school. how many boys in the school? \n" ); document.write( "
Algebra.Com's Answer #198777 by edjones(8007)\"\" \"About 
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Let y=number of boys.
\n" ); document.write( "y/(123+y)=2/5 Proportion
\n" ); document.write( "5y=246+2y multiply each side by 5(123+y) to eliminate fractions.
\n" ); document.write( "3y=246
\n" ); document.write( "y=82
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