Compute gross profit earned by the company for each of the four costing methods. For specific identification, the March 9 sale consisted of 140 units from beginning inventory and 270 units from the March 5 purchase; the March 29 sale consisted of 120 units from the March 18 purchase and 160 units from the March 25 purchase. (Round weighted average cost per unit to two decimals and final answers to nearest whole dollar.)

Engberg company installs lawn sod in home yards. the company’s most recent monthly contribution format income statement follows: amount percent of sales sales $ 80,000 100% variable expenses 32,000 40% contribution margin 48,000 60% fixed expenses 38,000 net operating income $ 10,000 required: 1. compute the company’s degree of operating leverage. (round your answer to 1 decimal place.) 2. using the degree of operating leverage, estimate the impact on net operating income of a 5% increase in sales. (do not round intermediate calculations.) 3. construct a new contribution format income statement for the company assuming a 5% increase in sales.