ok so here is the problem....

the average of a set of 8 consecutive odd integers is 18, what is the greatest of these integers?

this problems seems straight forward..

so i let x be my first integer and then counted out 7 more...

x, x+2, x+4, x+6 and so on...

i then added up the integers and got the setup to be

24.75, my book says the answer is 25. which i know is an integer, but i thought my approach was right. i just took my 8 integers and divided them by 8 and set it equal to 18? how did my book get 25 and what did i do wrong?

thanks in advance...