By how much will popcorn sales increase if average income goes up by 18 percent (Assume the income elasticity of popcorn is 3.29.)?

To calculate the increase in popcorn sales due to an 18 percent rise in average income, we can use the formula for income elasticity of demand: Percentage change in quantity demanded = Income elasticity × Percentage change in income. Given an income elasticity of 3.29, the increase in sales would be 3.29 × 18% = 59.22%. Thus, popcorn sales are expected to increase by approximately 59.22%.