Carrier lennox trane york sales $ 150,000 $ 550,000 $ 38,700 $ 255,700 sales discounts 5,000 17,500 600 4,800 sales returns and allowances 20,000 6,000 5,100 900 cost of goods sold 79,750 329,589 24,453 126,500 compute net sales, gross profit, and the gross margin ratio for each of the four separate companies. (round your gross margin ratio to 1 decimal place; i. e.; 0.2367 should be entered as 23.7%.)

World systems manufactures an optical switch that it uses in its final product. world systems incurred the following manufacturing costs when it produced 74 comma 000 units last​ year: ​(click the icon to view the manufacturing​ costs.) another company has offered to sell world systems the switch for $ 13.50 per unit. the world systems prepared an outsourcing decision analysis to show the cost per unit of making the switches versus the cost per unit of buying​ (outsourcing) the switches. ​(click the icon to view the outsourcing decision​ analysis.) world systems needs 86 comma 000 optical switches next year​ (assume same relevant​ range). by outsourcing​ them, world systems can use its idle facilities to manufacture another product that will contribute $ 140 comma 000 to operating​ income, but none of the fixed costs will be avoidable. should world systems make or buy the​ switches? show your analysis.