Can you please help me solve these two problems step by step and what would be the correct answer?

A. minimum tax:

horzontaly equitable tax:

Given the followng tax structure: o. What is the minimum tax that Pedro should pay to make the tax structure vertically equitable based on the tax rate paid? (Round your final answer to nearest whole dollar amount.) b. This would result in what type of tax rate structure? Given the following tax structure: What tax would need to be assessed on Venita to make the tax horizontally equitable