The capacity of beer is generally 330ml, the liquid weight is about 330g, and the bottle weight is about 250 g.
The weight of 24 bottles is 580*24= 13920g, the weight of caps and cartons of other packages is about 500g, and the total weight is about 14.4kg, which is about 29kg.
If the landlord doesn't believe it, you can weigh it, and the error should not exceed 5%.