The Difference Between Demand and Quantity Demanded Show We learned in an earlier section that as the price of a product increases, the amount purchased by buyers decreases. This is the law of demand. In a more recent section, we noticed that as demand increases, the price of a product increases. When you look at these two statements together, it may appear confusing and contradictory. However, the two statements are both valid. It is merely a matter of what causes what; in other words, which is the cause and which is the effect? To understand the difference more clearly, we need to study the difference between demand and quantity demanded. Quantity Demanded If the market price of a product decreases, then the quantity demanded increases, and vice versa. For example, when the price of strawberries decreases (when they are in season and the supply is higher; see graph below), then more people will purchases strawberries (the quantity demanded increases). A quantity demanded change is illustrated in a graph by a movement along the demand curve. 
The following graph illustrates an increase in demand: In the graph above, demand increases as D1 shifts to D2. Quantity supplied increases in the above case as the equilibrium point shifts along the supply curve from point A to point B. The Difference Between Supply and Quantity Supplied The distinction between supply and quantity supplied is similar to the difference between demand and quantity demanded. Quantity Supplied If the market price of a product increases, then the quantity supplied increases, and vice versa. For example, when housing prices increase (when the demand for houses has been strong), then more people will want to sell their house (quantity supplied increases). A quantity supplied change is illustrated in a graph by a movement along the supply curve. Supply When one or more of the four supply determinants listed in Section 8 changes, then supply changes. For example, when technology advances, or the cost of production decreases, supply increases. An increase in supply is illustrated in a graph by a rightward shift in the supply curve. The following graph illustrates an increase in supply and an increase in quantity demanded. The above diagram illustrates that supply increases as S1 shifts to S2, and quantity demanded increases as the equilibrium point shifts along the demand curve from point A to point B. For a video explanation of the difference between demand and quantity demanded and supply and quantity supplied, please watch: Option A. The decline in the buyers of strawberries from the market will reduce the demand(D) for strawberries. This will reduce the price(P), and the quantity(Q). But if simultaneously, the supply(S) of strawberries rises, then the price(P) will decrease and the quantity(Q) will increase. Therefore, the net effect on price(P) is that they fall, but the direction of the quantity(Q) of strawberries is ambiguous. Thus, this option is wrong. Option B. The decline in the buyers of strawberries reduces their demand(D). The demand curve(D) moves to the left. The price(P) falls and so does the quantity(Q). Simultaneously, the rise in the supply(S) of strawberries will move the supply curve(S) to the right. The price(P) will fall and the quantity(Q) will increase. Therefore, in the equilibrium, the quantity(Q) may either increase, decrease, or remain unchanged depending on the magnitude of the shift of D and S curves. But the price(P) will definitely decrease. Thus, this option is correct. Option C. The decreased demand(D), and the simultaneous rise in the supply(S) will not necessarily raise the quantity(Q). The effect on the deviation in the quantity(Q) of strawberries is ambiguous. But the price(P) of strawberries will definitely decline. Thus, this option is wrong. Option D. The lower demand(D), and a high supply(S) of strawberries may increase, decrease or leave the quantity(Q) unchanged. But the price(P) will definitely decrease. Thus, this option is wrong. Option E. The decline in the demand(D), and a rise in the supply(S) of strawberries will not definitely decrease the quantity(Q) in the equilibrium. The effect on them is ambiguous. Whereas the price(P) will surely decrease. Thus, this option is wrong. Which of the following will shift the supply curve to the right?An increase in the change in supply shifts the supply curve to the right, while a decrease in the change in supply shifts the supply curve left. Essentially, there is an increase or decrease in the quantity supplied that is paired with a higher or lower supply price.
Which of the following will not cause a shortAnswer and Explanation: The answer is C. A change in price of the good.
What is the shortShort-Run Supply Curve
The short-run individual supply curve is the individual's marginal cost at all points greater than the minimum average variable cost. It holds true because a firm will not produce if the market price is lesser than the shut-down price.
Which would cause a shift in the supply curve quizlet?Changes in the costs of production, improvements in technology, taxes, subsidies, weather conditions, health of livestock and crops, price of other products, disasters, wars, discoveries of new sources and depletion. Changes in supply conditions, causing shifts in the supply curve.
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Which of the following would shift the short-run supply curve for strawberries?
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