CREATE TABLE table_name_50 (matches INT, team VARCHAR, strike_rate VARCHAR)

What were the total number of matches played when the Deccan Chargers had a strike rate of 15.5?
SELECT MAX(matches) FROM table_name_50 WHERE team = "deccan chargers" AND strike_rate > 15.5
SELECT MAX("matches") FROM "table_name_50" WHERE "deccan chargers" = "team" AND "strike_rate" > 15.5