CREATE TABLE table_42847 ("Year" FLOAT, "Chassis" CLOB, "Engine" CLOB, "Start" FLOAT, "Finish" FLOAT, "Entrant" CLOB)

What is the average finish that has 24 as the start, with a year after 1987?
SELECT AVG("Finish") FROM table_42847 WHERE "Start" = '24' AND "Year" > '1987'
SELECT AVG("Finish") FROM "table_42847" WHERE "Start" = '24' AND "Year" > '1987'