Question : If the cost of good "X" decreases, increasing the demand for product "Y," then both goods are:
Option 1: Subsittude Goods
Option 2: Complementary goods
Option 3: Inter-related goods
Option 4: None of these
Correct Answer: Complementary goods
Solution :
If the cost of good "X" decreases, increasing the demand for product "Y," then both goods are complementary goods.
When two goods are complements, they experience joint demand - the demand of one good is linked to the demand for another good. Therefore, if a higher quantity is demanded of one good, a higher quantity will also be demanded of the other, and vice versa.
Hence the correct answer will be option B..