3. When the price of coffee is $ 5 , the quantity demanded is 400 cups per day . When the price falls to $ 4 , the quantity demanded increases to 600. Given this information , we know that the demand...

3. When the price of coffee is $ 5 , the quantity demanded is 400 cups per day . When the price falls to $ 4 , the quantity demanded increases to 600. Given this information , we know that the demand for bubble gum is

a inelastic

b . elastic