Math, Please help :/
posted by Amanda .
Kyle had 36 books in his locker. Some were library books, some were textbooks, and the rest were telephone books. The number of library books and telephone books combined equals 3 times the number of library books.How many of each type of book were in Kyle's locker?
Please help me /:

You typed something wrong. Please fix your third sentences.

oops. my bad. It should say The number of textbooks and telephone books combined equals 3 times the number of library books.

This same question has appeared several times,
here is a solution .....
http://www.jiskha.com/display.cgi?id=1289253201