Understanding marginal and average tax rates Consider the imaginary nation of Legumina, whose citizens only consume carrots. Assume that the price of carrots is $1 each. The government of Legumina has developed two different tax schemes, the details of which are outlined below: Use the Plan X and Plan Y tax schemes to complete the following table by deriving the marginal and average tax rates under each tax plan at the consumption levels of 600 carrots, 1,200 carrots, and 2,500 carrots, respectively. Complete the following table by indicating whether each plan is a progressive tax system, a proportional cax system, or a regressive tax system..