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QUESTION 13 Patricia withdraws R10 000 from her savings account (on which she earns interest of 10% per annum) to purchase a new computer which she will be able to use in her consultancy for a period of five years. The interest that she would have earned (10%% per annum) forms part of her economic costs of production in the first year. Note, you will lose 50% of the mark for this question if you choose the incorrect option. A TRUE B. FALSE QUESTION 14 Average fixed cost decreases, reaches a minimum and then increases. Note, you will lose 50%% of the mark for this question if you choose the incorrect option. A TRUE B. FALSE QUESTION 15 If marginal cost is less than average cost, average cost decreases. Note, you will lose 50% of the mark for this question if you choose the incorrect option. A TRUE B. FALSE QUESTION 16 The law of diminishing marginal return applies to the short run only (le to a situation in which at least one of the firm's inputs is fixed). Note, you will lose 50% of the mark for this question if you choose the incorrect option. A TRUE B. FALSE QUESTION 17 Use the data in the following table to answer the question. Output Total cost (Units) (R) 100 1 110 2 130 3 166 4 220 5 300 The average variable cost of the third unit is