What is the average Year with Chassis equalling cooper t60?
CREATE TABLE table_name_49 (year INTEGER, chassis VARCHAR)
SELECT AVG(year) FROM table_name_49 WHERE chassis = "cooper t60"
### Context: CREATE TABLE table_name_49 (year INTEGER, chassis VARCHAR) ### Question: What is the average Year with Chassis equalling cooper t60? ### Answer: SELECT AVG(year) FROM table_name_49 WHERE chassis = "cooper t60"