Suppose that when the price of good X increases from $800 to $850,the quantity demanded of good Y increases from 65 to 70.Using the midpoint method,the cross price elasticity of demand is about
A)-1.2,and X and Y are complements.
B)-0.1,and X and Y are complements.
C)0.1,and X and Y are substitutes.
D)1.2,and X and Y are substitutes.

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The Answer of Suppose that when the price of good X increases from $800 to $850,the quantity demanded of good Y increases from 65 to 70.Using the midpoint method,the cross price elasticity of demand is about
A)-1.2,and X and Y are complements.
B)-0.1,and X and Y are complements.
C)0.1,and X and Y are substitutes.
D)1.2,and X and Y are substitutes.

Suppose That When the Price of Good X Increases from $800