If a firm's sales are 620 lakh rupees and its inventories increase by 80 lakh rupees, what is the value of output?
The value of output includes both goods sold and the change in inventories. The formula is value of output = sales + change in inventories. Therefore, value of output = 620 + 80 = 700 lakh rupees. The increase in inventories represents current production that has not yet been sold.