document.write( "Question 724118: The mean of 15 scores is 82. If the mean of 7 of those scores is 78, what is the mean of the remaining 8 scores? \n" ); document.write( "
Algebra.Com's Answer #443614 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! The mean of 15 scores is 82. If the mean of 7 of those scores is 78, what is the mean of the remaining 8 scores? \n" ); document.write( ": \n" ); document.write( "Let x = mean of remaining 8 scores \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( "multiply both sides by 15 \n" ); document.write( "7(78) + 8x = 15(82) \n" ); document.write( "546 + 8x = 1230 \n" ); document.write( "8x = 1230 - 546 \n" ); document.write( "8x = 684 \n" ); document.write( "x = 684/8 \n" ); document.write( "x = 85.5 is the mean of the remaining 8 scores \n" ); document.write( " \n" ); document.write( " |