If the price of an airline ticket from SFO to LAS were to increase by 10%, from $100 to $110 roundtrip, while all other demand factors remain at their initial values, the quantity of rooms demanded at the Triple Sevens from rooms per night to rooms per night. Because the cross-price elasticity of demand is

Quantity demanded declined to 250 rooms per night from 300 rooms per night.

Cross price elasticity of demand is negative.

Explanation:

Cross price Elasticity of demand = [change in quantity demand/ current demand] / [ % change in price]

Cross price elasticity of demand = {[300 - 250] / 300 } / 10

Cross price elasticity of demand is = -1.6

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the correct answer is b.)