CREATE TABLE table_24557 ("Municipality" TEXT, "Type" TEXT, "District" TEXT, "Area  ( km\\u00b2 ) " TEXT, "Population  ( 2010 ) " FLOAT, "Pop. Density  ( per km\\u00b2 ) " TEXT, "No. of Barangays" FLOAT, "Municipal Mayor" TEXT)

How many people per km2 are there in the municipality whose mayor is Boy Quiat?
SELECT "Pop. Density (per km\u00b2)" FROM table_24557 WHERE "Municipal Mayor" = 'Boy Quiat'
SELECT "Pop. Density (per km\u00b2)" FROM "table_24557" WHERE "Municipal Mayor" = 'Boy Quiat'