A groceries store offers a discounted price for coke at $1.50 per pack and the sales went up to 250 pack for a month. Normally the store sells the coke at regular price of $2.00 per pack and the average sales is 150 packs per month. What is theprice elasticity of demandfor coke? (4 points) Show your calculation. Is demand of coke elastic, inelastic or unit elastic? (2 points)