I cannot solve for ending RM because RM used is not given. And I cannot solve for Beg. Finished goods because COGS isn't given. Help!!

1-Nov 30-Nov Raw materials Work in process Finished goods 18,000 find unknown 14,000 13,000 8,000 find unknown $ Sales revenue Direct labor Manufacturing OH Selling expenses Administrative expenses Cost of goods manufactured Raw materials purchased Net income What is ending raw materials? What is beginning finished goods? 105,000 10,000 12,000 17,500 20,000 45,000 11,500 $30,500