If average household income increases by 50%, from $40,000 to $60,000 per year, the quantity of rooms demanded at the triple sevens from rooms per night to rooms per night. therefore, the income elasticity of demand is , meaning that hotel rooms at the triple sevens are . if the price of a room at the exhilaration were to decrease by 20%, from $200 to $160, 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 , hotel rooms at the triple sevens and hotel rooms at the exhilaration are . triple sevens is debating decreasing the price of its rooms to $175 per night. under the initial demand conditions, you can see that this would cause its total revenue to . decreasing the price will always have this effect on revenue when triple sevens is operating on the portion of its demand curve.