According to an article in the Wall Street Journal, “In the four weeks through Sept. 1 [2018], the total number of orange juice gallons sold fell by 5.1% from the same period last year, as prices increased by 2.6%.”

a. Assuming that the demand for orange juice didn’t shift during this period, calculate the price elasticity of demand for orange juice. 

b. The article also notes that the tastes of U.S. consumers have changed, and they are consuming less fruit juice partly because of its high sugar content. Does this information affect your answer to part (a)? Briefly explain.