Introduction

What is Rank Rush?
Rank Rush is a strategy that focuses on making the most amount of money in the most efficient way. Rank Rushers usually use a combination of hubs in Africa, specific types of Aircraft and routing that makes their airline as efficient as possible

Understanding Efficiency
Efficiency is a measure of how good you are at investing your money and turning a profit. There's many way/equations to calcule it, so here's one of them, probably the simplest and most intuitive

$$E=(SP/AV)$$

Where E is the efficiency, SP is your structural profit and AV is your airline valuation. Here's a table to help you interpret the result:  Note: this table isn't objective, it's only goal is to give you an idea of where and what you are