CREATE TABLE table_name_19 (date_performed VARCHAR, main_contestant VARCHAR, scores_by_each_individual_judge VARCHAR)

What Date performed has a Scores by each individual judge of 10 + 10 + 10 = 30, and a Main contestant of karanvir bohra?
SELECT date_performed FROM table_name_19 WHERE scores_by_each_individual_judge = 10 + 10 + 10 = 30 AND main_contestant = "karanvir bohra"
SELECT "date_performed" FROM "table_name_19" WHERE "karanvir bohra" = "main_contestant" AND "scores_by_each_individual_judge" = TRUE