In: Economics
Suppose goods X and Y are complements, and the price of good Y increases. Which of the following is TRUE?
The demand for X decreases.
Quantity demanded for Y will decrease.
The price of X will increase.
options:
I, II, and III. | |
I only. | |
II and III only. | |
I and II only. |
If X and Y are substitutes, and if the marginal cost of producing X increases, then which of the following WILL occur?
The quantity demanded of X will decrease.
The equilibrium price of Y will increase.
The supply of X will increase.
options:
I only. | |
I and II only. | |
II only. | |
I, II and III. |
According to the law of demand, as the price of commodity increases, the quantity demanded falls. So, as price of Y increases the quantity demanded of Y will decrease. So, option 2 is correct. If X and Y are complements, then as the price of Y increases, this means that the demand for X falls. As the demand for X decreases, the demand curve shifts to the left, thereby the price of X falls. Therefore, option 1 is correct and 3 is not correct. Therefore, the answer to this question is d) 1 and 2
As the price equals marginal cost, as the marginal cost of producing X increases, so does the price of X increase. As the price of X increases, the quantity demanded of X will decrease following the law of demand. Therefore, option 1 is correct. Since X and Y are substitutes, as the price of X increases, then demand for Y will increase as people will prefer the cheaper option given that X and Y are substitutes. So, the demand for Y increases. As the demand curve of Y shifts to the right, the price of Y will increase. Therefore option 2 is correct. So, the correct answer is b) 1 and 2 only