document.write( "Question 1143081: 100 students enter a competition. The average score for the entire group is 63. The average score for male students is 60 and average score for female students is 70. Question: What is the difference in number of male and female students? \n" ); document.write( "

Algebra.Com's Answer #763845 by josgarithmetic(39630) $\"\"$ $\"About$

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x, females
\n" ); document.write( "y, males
\n" ); document.write( " $\"system%28x%2By=100%2C%2870x%2B60y%29%2F100=63%29\"$ \r
\n" ); document.write( "\n" ); document.write( "-\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"7x%2B6y=630\"$
\n" ); document.write( "-
\n" ); document.write( " $\"system%287x%2B6y=630%2C6x%2B6y=600%29\"$
\n" ); document.write( " $\"E1-E2\"$ :
\n" ); document.write( " $\"x=30\"$ , $\"meaning\"$ $\"that\"$ $\"y=70\"$ \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Forty more female students than male students. \n" ); document.write( "

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