At the end of the year, a shop had total assets of P600,000 and total liabilities of P130,000. If the total assets decreased by P80,000 and owner's equity increased by P120,000 during the year, what is the amount of total liabilities at the beginning of the year?

At the beginning of the year, EMT shop has total assets of P50,000 and total liabilities of P15,000. If the total assets increased by P30,000 and the total liabilities decreased by P10,000 during the year, what is the amount of the owner's equity at the end of the year?