SELECT SUM(decile) FROM table_name_93 WHERE gender = "coed" AND authority = "state" AND name = "mount maunganui school"
Berapa banyak desil yang memiliki jenis kelamin mahasiswi, otoritas negara, dan nama sekolah Gunung Maunganui?
CREATE TABLE table_name_93 (decile INTEGER, name VARCHAR, gender VARCHAR, authority VARCHAR)