suppose beverage customers spend an average $4 on beverages with an 80 percent gross margin, and food customers spend an average $5 on sandwiches and salads with a 50 percent gross margin. In both cases, gross magin is simply price minus input cost and does not reflect variable labor and related expenses. Customer traffic throughout the day is as follows: Hour of day Beverage customers Food customers Profit Contribution$ 06.00--------- 150 -------------- 50 ------------- 605.00 07.00--------- 250 -------------- 100 ------------- 1050.00 08.00--------- 200 --------------- 75 ------------- 827.50 09.00--------- 175 --------------- 50 -------------- 685.00 10.00--------- 100 -------------- 25 -------------- 382.50 11.00--------- 200 --------------- 75 -------------- 827.50 12.00--------- 200 --------------- 175 --------------1077.50 13.00--------- 125 --------------- 150 -------------- 775.00 14.00--------- 75 --------------- 75 -------------- 427.50 15.00--------- 50 --------------- 50 -------------- 285.00 16.00--------- 100 --------------- 25 -------------- 382.50 17.00--------- 75 --------------- 50 -------------- 365.00 18.00--------- 50 --------------- 75 -------------- 347.50 19.00--------- 50 --------------- 25 -------------- 222.50 20.00--------- 25 --------------- 25 -------------- 142.50 21.00--------- 25 --------------- 10 -------------- 105.00 22.00--------- 25 --------------- 10 -------------- 105.00 TOTAL 1875 1045 8612.5 A.Assume labor, electricity, and other incremental costs are $175 per hour of operation; calculate the profit-maximizing hours of operation per day.z B.Assume the store is open 365 days per year, and that incremental rental costs are $2 million per year. Calculate optimal incremental profit. Should Coffee store close this year? 版主很抱歉,跟您介版面~ 不好意思跟各位經濟達人求救,此兩題該如何解答呢?? --

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