Which one of the following does not influence quantity demanded for

Which one of the following does not influence quantity demanded for a good ?

Good's own price
Price of a complementary good
Price of a substitute good
Prices of inputs into production of the good
This question was previously asked in
UPSC CDS-1 – 2022
Prices of inputs into production of the good does not influence quantity demanded for a good.
The quantity demanded of a good is influenced by factors affecting consumer’s willingness and ability to buy. These include the good’s own price, prices of related goods (substitutes and complements), consumer income, tastes and preferences, and expectations.
– Good’s own price causes a movement along the demand curve.
– Price of a complementary good and Price of a substitute good shift the demand curve.
– Prices of inputs into production (like labour, raw materials) affect the cost of production. This influences the supply side, shifting the supply curve. It does not directly affect the quantity demanded by consumers at any given price.
Changes in the price of a good cause a movement along the demand curve (change in quantity demanded), while changes in other factors influencing demand cause a shift in the entire demand curve (change in demand). Factors influencing supply include prices of inputs, technology, number of sellers, and expectations.
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