document.write( "Question 471165: In a school having 990 students 12 out of 27 are girls. How many boy students are there \n" ); document.write( "
Algebra.Com's Answer #323173 by algebrahouse.com(1659)\"\" \"About 
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If 12 out of 27 are girls,
\n" ); document.write( "then 15 out of 27 are boys.
\n" ); document.write( "There are 990 total.\r
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\n" ); document.write( "\n" ); document.write( "15 boys / 27 total = x boys / 990 total {set up a proportion}
\n" ); document.write( "27x = 15(990) {cross-multiplied}
\n" ); document.write( "27x = 14,850 {multiplied 15 by 990}
\n" ); document.write( "x = 550\r
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\n" ); document.write( "\n" ); document.write( "there are 550 boys
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