Your friend doesn't do his own laundry. Instead, he sends his driver with 10kg of dirty laundry to the cleaners. He told you that it usually worked out fine, but there was this one time: When putting the laundry in the car that time, his driver felt the bag was too heavy. He checked, and on top he found his boss's heavy coat, not really dirty. Taking that one out, the driver estimated that the bag now had the correct weight. Your friend smiles about the driver's simple solution: He left his coat in the house. Li lasis lian mantelon en la domo.