IB Economics | Non Price Determinants Of Demand: Substitutes

In this video I show how a change in the price of a good can cause a shift in the demand curve of a substitute good.
For instance let's consider apples and bananas to be substitutes. If price of apples increases then quantity demanded for apples decreases. I.e. there is a movement along the demand curve for apples.
As a result people start consuming more bananas. I.e. they substitute apples for bananas. This leads to a shift to the right of the demand curve for bananas.

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