Hi Salvador,
1. Not exactly. It means that because you sold it at a loss, you save 24k from your corporate taxes. If you had not sold it, you would have paid 24k more in corporate tax.
2. I understand your confusion. Here, WC is actually -WC. Working capital (simplifying) is accounts receivable - accounts payable. That is, how much your clients owe you vs how much you owe your suppliers. In this case, we only have accounts payable, which is one-fourth of the COGS. Therefore, we owe our suppliers.
You can eliminate the - everywhere
1. Not exactly. It means that because you sold it at a loss, you save 24k from your corporate taxes. If you had not sold it, you would have paid 24k more in corporate tax.
2. I understand your confusion. Here, WC is actually -WC. Working capital (simplifying) is accounts receivable - accounts payable. That is, how much your clients owe you vs how much you owe your suppliers. In this case, we only have accounts payable, which is one-fourth of the COGS. Therefore, we owe our suppliers.
You can eliminate the - everywhere