CREATE TABLE table_50132 ("Model" TEXT, "Manufacturer" TEXT, "Weight  ( kg ) " FLOAT, "Display size  ( in ) " FLOAT, "Processor model" TEXT, "Storage type" TEXT)

Which Weight (kg) has a Manufacturer of fujitsu, and a Model of lifebook p1610?
SELECT AVG("Weight (kg)") FROM table_50132 WHERE "Manufacturer" = 'fujitsu' AND "Model" = 'lifebook p1610'
SELECT AVG("Weight (kg)") FROM "table_50132" WHERE "Manufacturer" = 'fujitsu' AND "Model" = 'lifebook p1610'