Weiss Corporation is under Chapter 7 Liquidation. Weiss reports total liabilities/debt of $820,000 and total assets with a liquidation value of $650,000. Of these assets, $300,000 are pledged as security on debt obligations of $220,000, and a further $120,000 are pledged as security on $180,000 of liabilities. Finally, there are unsecured liabilities with an amount of $30,000.

How would you calculate the net free assets and the expected recovery percentage for the unsecured creditors?