Hi anonymously,

For breakeven consider all costs, income and discounting. The approach when this happens in an interview is as follows: first come up with your assumption and overall formula, then go through it step by step with the interviewer, then fill the elements with the numbers, and at the end do the combined math. The interviewer can then help you and knows how you are thinking about the question and can see that you are solving it even if the numbers don't work out.  Of course there are other ways, too. But don't just deliver the number answer. Best regards, 

Hello there, 

Approach 1 is the corrent way to calculate breakeven unit. 

The reason why your Approach 2 is incorrect is: in the formula, you should also multuply the variable costs with “breakeven units”, since with each addition of breakeven unit your variable costs will increase too. The correct formula should be:

breakeven units*15M= 4.8M+1.5M+(8M*breakeven units), so breakeven units= 0.9 ('000s)

Hope this helps. Let me know if any questions.
 

Hi there,

agree with the other coaches: approach 1 is the way to go.
In genreal for BEP calculations, stick to the basics and don't try to re-invent the wheel: 

BE Volume = Fixed Cost / Contribution Margin
Contribution Margin = Price / unit - Var cost / unit. 

All you need to do is to see how the different information maps against that formula and plug in the relevant numbers. As simple as that. As in some examples, the prompt takes into account a specific timeframe, just make sure you account for that.

If you have questions about Finance and Accounting knowledge required to casing, I have a compehensive Cheatsheet that covers all formulae you'll need. 

Feel free to reach out via PM, if you'd like to learn more.

Hope this helps. 

Regards, Andi

It's approach 1, as in 2. you are ignoring the fact that more students also generate more costs. 

You have to multiply the breakeven students times the variable costs on the right side of the equation as well. But if you really think about it, that's exactly what you are doing on 1. (students*contribution margin = students * revenue - students * variable cost).

Hi there,

This one almost got me. Nice work accounting for the “all units in '000s” footnote!

Your approach #1 is the right one. You have to account for the profit per student not the revenue.

When in doubt, check the casebook answer! (Though, admittedly, even those can sometimes be wrong)

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!