The manager of the greeting card section of KCC's department store is considering her order for a particular line of Christmas cards. The cost of each box of cards is P300; each box will be sold for P500 during the Christmas season. After Christmas, the cards will be sold for P200 a box. The card section manager believes that all leftover cards can be sold at that price. The estimated demand during the Christmas season for the line of Christmas cards, with associated probabilities, is as follows:

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