the hunigs's neighbors, the Sappies, also have $90 to spend on drinks every month and face the same prices for sugary drinks ($.5) other drinks ($1). Suppose that you cannot observe the Sappies utility function, but you observe that each month they purchase 144 sugary drinks and 18 other drinks (optimal bundle). In December 2017, in an effort to tackle obesity, the city of Seattle (where the Sappie live), passed a law introducing a 10-cent tax on sugary drinks. Assume that, as a result of the tax, the Sappies purchase 120 sugary drinks. What is the amount of other drinks that they purchase? what is the overall amount of the tax paid by Sappies? illustrate on a graph