【正文】 s other soft fruit may have risen by a larger amount. In such cases the demand curve for blueberries will have shifted to the right. Thus although a rise in the price of blueberries will cause a movement up along this new demand curve, more blueberries will nevertheless be demanded because they are now relatively cheaper than the alternatives.Page 38 216。 Chapter 2Answers to intext Questions in Economics (7th edition)Chapter 2Page 33 216。 1. Assume that in Table the total market demand for potatoes increases by 20 per cent at each price – due, say, to substantial increases in the prices of bread and rice. Plot the old and the new demand curves for potatoes. Is the new curve parallel to the old one? See Diagram below. As you can see, the curves are not parallel. A constant percentage increase in quantity demanded gives a bigger and bigger absolute increase as quantity increases. 216。000 and the term b a value of , construct a demand schedule with respect to total ine (Y). Do this for ines between 163。 1. How much would be supplied at a price of 70p per kilo? About 430 000 tonnes per month. 216。 Potato farmers may leave the industry. (b) Rise in supply of leather167。 This question is concerned with the supply of oil for central heating. In each case consider whether there is a movement along the supply curve (and in which direction) or a shift in it (left or right). (a)1 increase in price, quantity supplied increases by 1000 units). 216。 (d) A rise in the demand for bread。 If house prices rise in response to the excess of demand over supply, this may have the perverse effect of increasing demand, not choking it off. The reason is that people may see prices rising and rush to buy now before they rise any further. We examine this ‘destabilising speculation’ in section .If the government, or firm or anyone else is offering incentives for people to do things, they need to think closely about the ‘unintended consequences’ of these incentives and, if necessary, change the incentives so as to avoid them. In general it is best to tackle a problem as close to source as possible if these unintended consequences or side effects are to be minimised. (Threshold Concept 5) 2. Find out just what the learning objectives are of the economics course or module that you are studying. What positive incentives are there for you to meet these learning objectives? Identify any perverse incentives and how you would change them. Perverse incentives are likely to arise from assessment capturing only some of the learning objectives, with the result that others will be ignored by some students. Lecturers are encouraged to consider ‘constructively aligning’ their courses. What this means is that teaching and study methods, class activities, reading and assessment should all match the learning objectives of the course or module.Page 52 216。 requiring schools to include ‘litter awareness’ as part of citizenship education。 makes seats available to those who could not afford the freemarket price. Disadvantages: causes queuing or seats being only available to those booking well in advance.7