A firm has kept track of the quantity demanded of its output (Good X) during four time periods. The price of X and the prices of two other goods (Good Y and Good Z) were also recorded for each time period. The information is provided in the table that follows. Use it to calculate the own-price arc elasticity of demand and the two cross-price elasticities of demand. Determine whether Good Y and Good Z are complements or substitutes for Good X.

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The Answer of A firm has kept track of the quantity demanded of its output (Good X) during four time periods. The price of X and the prices of two other goods (Good Y and Good Z) were also recorded for each time period. The information is provided in the table that follows. Use it to calculate the own-price arc elasticity of demand and the two cross-price elasticities of demand. Determine whether Good Y and Good Z are complements or substitutes for Good X.

A Firm Has Kept Track of the Quantity Demanded of Its