document.write( "Question 187310: The average of nine numbers is 40. If 1 is added to the first number, 2 is added to the second number, 3 is added to the third number and so on up to the ninth number, what is the new average? \n" ); document.write( "
Algebra.Com's Answer #140420 by solver91311(24713)![]() ![]() You can put this solution on YOUR website! \r \n" ); document.write( "\n" ); document.write( "If the average of 9 numbers is 40, then the sum of the nine numbers must be 9 times 40 or 360. If you add 1 to the first number, 2 to the second, and so on, then you must be adding:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So the sum is 360 + 45 = 405, and the new average is 405 divided by 9 = 45.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "John \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |