Answer:
He will sell 600 pizzas per week if he cuts the price by 10%.
Explanation:
Price Elasticity of demand measure the responsiveness of demand to change in the price of a product. It calculates the ratio of change in demand and change in price.
Price elasticity of demand = % change in demand / % change in price
-2 = % change in demand / 10%
% Change in in demand = -2 x 10%
% Change in in demand = -20%
Following the law of demand as price decreases the demand of the product increases. So the sale of Pizzas will be increased by 20%.
Current Sale of Pizzas = 500 pizzas
Increase in sales = 500 x 20% = 100 pizzas
Increased sale = 500 + 100 = 600 pizzas