document.write( "Question 758125: The average age of a class of 30 students is 12 years. The average age of 5 students is 10 years. The average age of another group of 5 students is 14 years. What will be the average of remaining students of the class?\r
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document.write( "Pls give answer with detail calculations. \r
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document.write( "Pls examplify the same. \n" );
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Algebra.Com's Answer #461248 by josmiceli(19441)![]() ![]() You can put this solution on YOUR website! the definition of average is: \n" ); document.write( "( total value of \n" ); document.write( "given: \n" ); document.write( "( sum of ages ) / 30 = 12 \n" ); document.write( "Sum of ages = 360 \n" ); document.write( "----------------- \n" ); document.write( "5 of the 30 students average 10 yrs old \n" ); document.write( "( sum of ages of this group ) / 5 = 10 \n" ); document.write( "sum of ages of this group = 50 \n" ); document.write( "---------------- \n" ); document.write( "another group of 5 of the 30 students \n" ); document.write( "average 14 yrs old \n" ); document.write( "( sum of ages of this group ) / 5 = 14 \n" ); document.write( "sum of ages of this group = 70 \n" ); document.write( "------------------ \n" ); document.write( "There are 30 - ( 5 + 5 ) = 20 \n" ); document.write( "students remaining \n" ); document.write( "----------------- \n" ); document.write( "For the remaining students: \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "The average age of remaining students is 12 yrs old\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |