Hi Anonymous, To answer your questions, I will first describe the theoretical correct valuation approach, and then the simplified approach you can normally apply in consulting interviews. Full D... (more)

# All questions tagged Case Calculations - Consulting Q&A - PrepLounge.com

Ask a question## Case: Net Present Value Calculations

## Any tips to do math calculations fast ?

In order to perform math calculations faster, here are some tips you can use: Increase the number of steps in your calculations and turning complex operations into simple ones: It seems counter-... (more)

## Case: Quick Way to Calculate Compounded Interest

Ever heard of the rule of 70? For relatively low percentages (<10%) you can approximate the time to double an amount by dividing 70 by the percentage number. So at 2% interest, your money will... (more)

## Quant skills

Hi Moji, it seems your issue is not the math computation, but rather how to structure the math part once you receive a question (that is, the logic behind that you should apply). This means you sho... (more)

## Case Study Question: Market Size

Hello Sudipto, the first part of this case would be only about crunching the numbers, then you will need to add some hypothesis and finally make some considerations. ----> Crunch the numbers... (more)

## cagr calculation (estimate)

You should be careful with rule of 72. With big growth rates it is not working. If growth rate is more than 15% results can be drastically different. In PST sample "A" there is a question with CAGR (... (more)

## NPV Calculation estimations

Hey John, Before attempting to answer, I would like to clarify the question details. See below: 1. So Discount rate is 10%? 2. Growth rate is 5% but growth starts in year 1. I.e. Yr... (more)

## calculation question - How many years before X number of sales

You may apply the Rule 72. You divide 72 by the rate and get the number of years to double the initial number: https://www.investopedia.com/ask/answers/04/040104.asp

## How to calculate "Net operating profit"?

Hi, Net operating profit (Or net Income) = EBIT - interest income - income taxes You'll don't need EBIAT formula on the case interviews. Net income will be useful Best!

## How to calculate a market sizing case instinctively and quickly?

Hi, As for structuring - I've answered here: https://www.preplounge.com/en/consulting-forum/how-to-structuring-the-market-sizing-case-2301 For math skills you need to learn: Rounding u... (more)

## Tips for quick division (rules, simplifications etc.)

Hi, In that case, if you need a precise answer, I believe you should just do the division on paper. They only thing you could do is playing with the zeros (e.g. 1600/175) and then move it back.... (more)