Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_47 (position INTEGER, a_score VARCHAR, b_score VARCHAR, total VARCHAR)

### Question ###
What was their position when the score of B was less than 9.05, a total was 15.275, and A Score larger than 6.4?

### Accurate SQL ###

SELECT AVG(position) FROM table_name_47 WHERE b_score < 9.05 AND total = 15.275 AND a_score > 6.4