今天題目的主題是reconcile,只不過又是另外一種小變形。
  Last month a manufacturing company’s profit was $2 000, calculated using absorption costing principles. If marginal costing principles has been used, a loss of $ 3 000 would have occurred. The company’s fixed production cost is $ 2 per units. Sales last month were 10 000 units.
  What was last month’s production (in units)?