document.write( "Question 761933: Average
\n" );
document.write( "
\n" );
document.write( "we have: 10 , 10 , and 1 we found their average and it was 7. we found it by
\n" );
document.write( "(10+10+1)/3\r
\n" );
document.write( "\n" );
document.write( "so we got the total average
\n" );
document.write( "but what if the total average is given , and 2 numbers are give how will we find the firt lets see :
\n" );
document.write( " 10 , 10 , x total makes 7\r
\n" );
document.write( "\n" );
document.write( " Find X \n" );
document.write( "
Algebra.Com's Answer #463590 by Cromlix(4381)![]() ![]() You can put this solution on YOUR website! You have three numbers and their average is 7 \n" ); document.write( "7 * 3 = 21 Total before averaging \n" ); document.write( "10 + 10 + x = 21 \n" ); document.write( " 20 + x = 21 \n" ); document.write( " x = 21 -20 \n" ); document.write( " x = 1 \n" ); document.write( "Hope this helps. \n" ); document.write( ":-) \n" ); document.write( " |