Answer:
SELECT resid_city, avg(convert(float,age))
FROM customer
GROUP BY resid_city
Explanation:
SQL or structured query language is a language used to interact with databases. It is a relational database language, used to create, update, and query the content of databases.
The "SELECT" clause in the query statement above is used to read the content of the customer table querying the table based on the average age of customers grouped by their resident cities to return the "resid_city" and the float number of the average age.
