document.write( "Question 205667: If the average of ten consecutive odd integers is 20, what is the average of the last five of those integers? Please show me how to do it. \n" ); document.write( "

Algebra.Com's Answer #155291 by Targetweek(62) $\"\"$ $\"About$

You can put this solution on YOUR website!
This one is harder to explain but not hard to do at all
\n" ); document.write( "The average of the numbers has to be 20
\n" ); document.write( "since they have to be consecutive, half of them have to be greater than twenty and half of them have to be less than twenty
\n" ); document.write( "start with the first odd integer >20
\n" ); document.write( "which is 21
\n" ); document.write( "so now, what number added to 21 will make the average of the two 20
\n" ); document.write( "that number is 19
\n" ); document.write( "19 + 20 = 40 / 2 = 20
\n" ); document.write( "so now we go to the next hightest integer >20
\n" ); document.write( "which is 23
\n" ); document.write( "so now, what number added to 23 will make the average of the two 20
\n" ); document.write( "that number is 17
\n" ); document.write( "17 + 23 = 40 / 2 = 20
\n" ); document.write( "Do you see the Pattern?
\n" ); document.write( "continue this process until you have used 10 numbers \r
\n" ); document.write( "\n" ); document.write( "the answer is 11,13,15,17,19,21,23,25,27,29
\n" ); document.write( "and 25 is the average of the last 5 \n" ); document.write( "

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