Essays on economics, institutions and history
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When public debate makes the basics confusing: capital, rules, entrepreneurship, inflation, history and economic freedom.
Economics explained with rigor and without jargon: essays, articles and books on Ecuador and the world.
Discounts and margin
Original calculation: how many extra units preserve contribution after a discount?
Sales and cash flow
A worked example: why cash can fall even when sales grow.
Essays on business and economics
Ideas and analysis of capital, institutions, history and enterprise.
Books and publications
Explore the archive and inspect the sources behind the work.
Gross margin, contribution and net profit
Worked example: three measures, what they mean and how to use each one.
Inventory vs cash to pay suppliers
Reproducible stock coverage and cash shortfall example for a small shop.
Articles
Economics explained with rigor and without jargon: essays, articles and books on Ecuador and the world.
Essays, free tools in service of the community and of entrepreneurship, and notices of new resources.
Read a worked calculation
How much more must you sell after discounting?
A 10% discount can require around 34% more units to preserve contribution under explicit assumptions. See the formula, arithmetic and what the result cannot tell you about demand.