If you know that the gross profit is equal to (1,200,000) dinars, and that the net operating profit before interest and tax is equal to (800,000) dinars, and that the interest expense is equal to (240,000) dinars, and that the income tax rate is equal to (40), find: The degree of operating leverage B degree of financial leverage C net profit after tax d the degree of total lift If sales decrease by (30), what is the expected amount of net profit before interest and tax?