$7.$ If the company wants a $10\%$ before tax on sales, what level of sales in pesos, does it need?$8.$ If the company wants a P$45,000$ after tax return on sales, what level of sales in pesos, does it need?$9.$ What is the margin of safety in peso and the margin of safety ratio at the expected sales of $50,000$ units?$10.$ What is margin of safety in peso sales and ratio at the expected sales of $75,000$ units?