document.write( "Question 936615: For every 2 girls there is 1 boy. In a class of 48, how many percent are girls? \n" ); document.write( "

Algebra.Com's Answer #570063 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+g+\"$ = number of girls in class
\n" ); document.write( "Let $\"+b+\"$ = number of boys in class
\n" ); document.write( "---------------
\n" ); document.write( "(1) $\"+g%2Fb+=+2%2F1+\"$
\n" ); document.write( "(2) $\"+g+%2B+b+=+48+\"$
\n" ); document.write( "------------------
\n" ); document.write( "(2) $\"+b+=+48+-+g+\"$
\n" ); document.write( "Substitute (2) into (1)
\n" ); document.write( "(1) $\"+g%2F%28+48+-+g+%29+=+2%2F1+\"$
\n" ); document.write( "Multiply both sides by $\"+48+-+g+\"$
\n" ); document.write( "(1) $\"+g+=+2%2A%28+48+-+g+%29+\"$
\n" ); document.write( "(1) $\"+g+=+96+-+2g+\"$
\n" ); document.write( "(1) $\"+3g+=+96+\"$
\n" ); document.write( "(1) $\"+g+=+32+\"$
\n" ); document.write( "-----------------
\n" ); document.write( "You are asked for:
\n" ); document.write( " $\"+%28+g+%2F+%28+g+%2B+b+%29+%29%2A100+\"$ ( the percent of the class that are girls )
\n" ); document.write( " $\"+%28+g+%2F+%28+g+%2B+b+%29+%29%2A100+=+%28+32+%2F+48+%29%2A100+\"$
\n" ); document.write( " $\"+%28+32%2F48+%29%2A100+=+%28+2%2F3+%29%2A100+\"$
\n" ); document.write( " $\"+%28+2%2F3+%29%2A100+=+66.67+\"$
\n" ); document.write( "66.67% are girls\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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