document.write( "Question 131553: 561 students, girls are 15 more than twice the number of boys.
\n" ); document.write( "how many girls are there and how many boys. this is not from a text book. I did it this way.
\n" ); document.write( " 2x+15=561 but my answer did not seem right, there is something I am missing. \n" ); document.write( "

Algebra.Com's Answer #96025 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"b\"$ = number of boys
\n" ); document.write( " $\"g\"$ = number of girls
\n" ); document.write( " $\"b+%2B+g+=+561\"$
\n" ); document.write( " $\"g+=+2b+%2B+15\"$
\n" ); document.write( "-----------------------
\n" ); document.write( "Now rearrage the 2nd equation
\n" ); document.write( " $\"b+%2B+g+=+561\"$
\n" ); document.write( " $\"2b+-+g+=+-15\"$
\n" ); document.write( "add the equations
\n" ); document.write( " $\"3b+=+546\"$
\n" ); document.write( " $\"b+=+182\"$
\n" ); document.write( " $\"b+%2B+g+=+561\"$
\n" ); document.write( " $\"182+%2B+g+=+561\"$
\n" ); document.write( " $\"g+=+561+-+182\"$
\n" ); document.write( " $\"g+=+379\"$
\n" ); document.write( "There are 182 boys and 379 girls
\n" ); document.write( "check:364
\n" ); document.write( " $\"g+=+2b+%2B+15\"$
\n" ); document.write( " $\"379+=+2%2A182+%2B+15\"$
\n" ); document.write( " $\"379+=+364+%2B+15\"$
\n" ); document.write( " $\"379+=+379\"$
\n" ); document.write( "and
\n" ); document.write( " $\"b+%2B+g+=+561\"$
\n" ); document.write( " $\"182+%2B+379+=+561\"$
\n" ); document.write( " $\"561+=+561\"$
\n" ); document.write( "OK \n" ); document.write( "

\n" );