Final answer:
The gross profit ratio for Nueva Company, using the FIFO method, is 33.98%.
Step-by-step explanation:
The gross profit ratio is calculated by dividing the gross profit by net sales and then multiplying by 100 to get a percentage. Gross profit is the difference between net sales and cost of goods sold.
For the FIFO method, cost of goods sold is equal to the cost of goods available for sale minus the ending inventory, which is $5,670 - $811 = $4,859.
The gross profit is then calculated as $7,360 - $4,859 = $2,501.
Finally, the gross profit ratio is calculated as ($2,501 / $7,360) * 100 = 33.98%.