A trader has current assets of ₹6,00,000, including ₹80,000 cash, ₹1,20,000 accounts receivable, ₹3,00,000 inventory, and ₹1,00,000 marketable securities. Current liabilities total ₹2,50,000, of which ₹50,000 are short-term bank loans and the rest are trade payables. Calculate the net working capital and comment on the firm’s short-term liquidity position.