Common math formulas

Hi there,

Some key formulas/concepts:

• Breakeven
• NPV (with + without growth, perpituity + 1-2 years from now)
• % Change
• ROI
• Margin
• Markup
• Inventory turnover

Some other helpful Q&As:

https://www.preplounge.com/en/consulting-forum/math-concepts-6951

https://www.preplounge.com/en/consulting-forum/math-equations-their-use-7934

Hi, I also recommend practicing with Preplounge math tool: https://www.preplounge.com/en/mental-math.php

Best,
Antonello

Hi there,

The most common formulas you need to know in a consulting interview are:

• Breakeven
• Rule of 72
• Perpetuity formula and general NPV formula
• ROI and related financial ratios

Besides that, you should be familiar with simple and compound interests.

Best,

Francesco

Hello!

Precisely for the high amount of questions (1) asked by my coachees and students and (2) present in this Q&A, I created the “Economic and Financial concepts for MBB interviews”, recently published in PrepLounge’s shop (https://www.preplounge.com/en/shop/prep-guide/economic_and_financial_concepts_for_mbb_interviews).

After +5 years of candidate coaching and university teaching, and after having seen hundreds of cases, I realized that the economic-related knowledge needed to master case interviews is not much, and not complex. However, you need to know where to focus! Hence, I created the guide that I wish I could have had, summarizing the most important economic and financial concepts needed to solve consulting cases, combining key concepts theorical reviews and a hands-on methodology with examples and ad-hoc practice cases.

It focuses on 4 core topics, divided in chapters (each of them ranked in scale of importance, to help you maximize your time in short preparations):

• Economic concepts: Profitability equation, Break even, Valuation methods (economic, market and asset), Payback period, NPV and IRR, + 3 practice cases to put it all together in a practical way. 
• Financial concepts: Balance sheet, Income statement/P&L and Performance ratios (based on sales and based on investment), +1 practice case
• Market structure & pricing: Market types, Perfect competition markets (demand and supply), Willingness to pay, Pricing approaches, Market segmentation and Price elasticity of demand, +1 practice case
• Marketing and Customer Acquisition: Sales funnel, Key marketing metrics (CAC and CLV) and Churn, +1 practice case

Feel free to PM me for disccount codes for the guide, and I hope it helps you rock your interviews! 

Yes. 

Here they are.

For anyone else who is preparing for case interviews, I’ve put together this material that covers virtually all the formulas you need:

• Cheatsheet: The Must-Know Consulting Terms for Interviews

Best,

Cristian