51. Given the following tax structure, what tax would need to be assessed on Venita to make the tax horizontally equitable? Taxpayer Mae Pedro Venita SalaryTotal Tax $10,000 $20,000 $10,000 $ 600 $1,500 ?77 52. Using the facts in problem 51, what is the minimum tax that Pedro should pay to make the tax structure vertically equitable based on the tax rate paid? This would result in what type of tax rate structure? 53. Using the facts in problem 51, what is the minimum tax that Pedro should pay to make the tax structure vertically equitable with respect to the amount of tax paid? This would result in what type of tax rate structure