[单选题]C Co uses material B, which has a current market price of $0·80 per kg. In a linear program, where the objective is to maximise profit, the shadow price of material B is $2 per kg. The following statements have been made:

正确答案 ：I

(i) and (iv)

解析：

Statement (ii) is wrong as it reflects the common misconception that the shadow price is the maximum price which should be paid, rather than the maximum extra over the current purchase price.

Statement (iii) is wrong but could be thought to be correct if (ii) was wrongly assumed to be correct.

[单选题]19 What is the company’s return on shareholders’ equity?

正确答案 ：C

15/100 = 15%

[单选题]13 Which of the following correctly describes the imprest system for operating petty cash?

正确答案 ：D

The exact amount of expenditure out of petty cash is reimbursed at intervals.

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