麻煩經濟達人解惑.... - 經濟

※ [本文轉錄自 B97303XXX 看板]

作者: blueoceaning (Maggie) 看板: B97303XXX
標題: 麻煩經濟達人解惑....
時間: Sat Mar 28 18:05:44 2009

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?

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