Talk:Cross elasticity of demand

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why is cross elasticity of demand important to an economy?

Measures the degree of substitutability/complementariness--Voidvector 06:19, Nov 8, 2004 (UTC)
because if an enterprise wants to sell cars for 38888 Euro and suddently the seatbelts price increases and goes from 10 Euro to 69 euro then the car price will increace two !!!! daa....