document.write( "Question 995570: the average for 12 students grades id 84. when the two lowest grades dropped, the average went up to 90. what is the average of the two lowest grades? \n" ); document.write( "
Algebra.Com's Answer #614339 by ankor@dixie-net.com(22740) You can put this solution on YOUR website! he average for 12 students grades id 84. \n" ); document.write( " when the two lowest grades dropped, the average went up to 90. \n" ); document.write( " what is the average of the two lowest grades? \n" ); document.write( ": \n" ); document.write( "let x = the Average of the two lowest grades \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( "Multiply both sides by 12 \n" ); document.write( "2x + 900 = 1008 \n" ); document.write( "2x = 1008 - 900 \n" ); document.write( "2x = 108 \n" ); document.write( "x = 108/2 \n" ); document.write( "x = 54% is the av of the two lowest grades \n" ); document.write( " |