CREATE TABLE table_name_99 (laps INT, driver VARCHAR, grid VARCHAR)

what is the laps when the driver is tony rolt and the grid is less than 10?
SELECT SUM(laps) FROM table_name_99 WHERE driver = "tony rolt" AND grid < 10
SELECT SUM("laps") FROM "table_name_99" WHERE "driver" = "tony rolt" AND "grid" < 10