CREATE TABLE table_name_75 (class VARCHAR, power_output__kw_ VARCHAR, number_in_class VARCHAR)

Which class has a power output larger than 700 and a class of 48?
SELECT class FROM table_name_75 WHERE power_output__kw_ > 700 AND number_in_class = 48
SELECT "class" FROM "table_name_75" WHERE "number_in_class" = 48 AND "power_output__kw_" > 700