This document provides a detailed solution to a quantitative analysis exercise on marketing arithmetic terms. It calculates key metrics like unit contribution, break-even volume and market share under different scenarios. Specifically: 1. It first calculates the unit contribution, break-even volume and market share based on current pricing, margins and costs. 2. It then analyzes the impact of doubling the advertising budget and calculates the new break-even volume, market share needed to achieve the same profit. 3. Finally, it considers increasing the retailer margin instead of advertising, and recalculates the break-even volume and market share required for the original profit level and a new profit target.