CREATE TABLE table_62175 ("Date" CLOB, "Round" FLOAT, "Pair" CLOB, "Ages" CLOB, "Dance" CLOB, "Song" CLOB)

How old were Mitchell & Jessica when they danced the Cha-Cha-Cha?
SELECT "Ages" FROM table_62175 WHERE "Dance" = 'cha-cha-cha' AND "Pair" = 'mitchell & jessica'
SELECT "Ages" FROM "table_62175" WHERE "Dance" = 'cha-cha-cha' AND "Pair" = 'mitchell & jessica'