document.write( "Question 1205574: Hi
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document.write( "In a math class 40% are girls. The average score for the girls was 82.3% while the average score for the boys was 72.5%. What was the average score of all the students.
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Algebra.Com's Answer #842471 by Edwin McCravy(20056)![]() ![]() You can put this solution on YOUR website! \r\n" ); document.write( "Suppose there are 100 students.\r\n" ); document.write( "40 girls and 60 boys.\r\n" ); document.write( "\r\n" ); document.write( "Sum of scores of the 40 girls is 40*82.3=32920\r\n" ); document.write( "Sum of scores of the 60 boys is 60*72.5=43500\r\n" ); document.write( "\r\n" ); document.write( "Sum of scores of all 100 students = 3292+4350=7642\r\n" ); document.write( "\r\n" ); document.write( "Average of all 100 students = 7642/100 = 76.42\r\n" ); document.write( "\r\n" ); document.write( "Edwin\n" ); document.write( " |