1.Ralphadvertisesto sellcookies forPhp 200a dozen.He sells75dozen and decides that he can charge more.He raises the price toPhp 300a dozen and sells45dozen. What is the elasticity of demand?

2. Last week, the price of envelopes was Php 150 a box, and Julie was willing to buy 10 boxes. Today, the price has gone up to Php 175 a box, and Julie is now willing to buy 8 boxes. What is Julie's elasticity of demand? Is Julie's demand for envelopes elastic or inelastic?

Problem 3: Given the demand schedule. solve for the price elasticity of Mango Demand Schedule for Mango Price Quantity Demanded (per kilo] (per truck) Php 110.00 500 Php 90.00 1200 a. What is the price elasticity coefcient of Mango? b. lfyou are a seller and wants to earn more revenue, what price should you set to maximize your income? Why? Problem 4: Suppose that when the price of dishwashing liquid decreases from Php 230 to Php 185, quantity supplied decreases from 250 to 210 unit. Using the mid-point elasticity approach. calculate price elasticity of supply