Maths efficiency in case

Hi there, 

What you can always do is to divide the denominator further. 

Basically:

6090 / 12 = 6090 / 4 * 3 = 6090 / 2 * 2 * 3 = 3045 / 2 * 3 = 1015 / 2 = 507.5.

Happy to share a few additional resources on improving maths speed - reach out.

Best,

Cristian

Hi there,

I think this is an interesting question that may be relevant for many people. I would be happy to share my thoughts on it:

• Yes, there is a more efficient way to solve these calculations. The problem you are solving is dividing a number by 12. Instead of using long division, you can use a shortcut to divide by 12 by simply dividing the number by 10 and then by 1.2.
• Here's how you can use this shortcut to solve the calculations you provided:
  • 6090 / 12 = 6090 / 10 / 1.2 = 609 / 1.2 = 507.5
  • 29600 / 12 = 29600 / 10 / 1.2 = 2960 / 1.2 = 2466.67
  • 20181 / 12 = 20181 / 10 / 1.2 = 2018.1 / 1.2 = 1681.75
• In conclusion, you can use the shortcut of dividing the number by 10 and then by 1.2 to quickly divide by 12. This is a more efficient and faster way than using long division to solve these calculations.

If you would like a more detailed discussion on how to address your specific situation, please don't hesitate to contact me directly.

Best,

Hagen

You should round here.

6090 / 12 is essentially 6000 / 12.

Which is 3000 / 6

Which 1500 / 3

Which is 500

Hi there,

If this pops up in a case question, my first question would instantly be if the interviewer expects an exact answer or if you can round the numbers (which 99% of interviewers will agree too).

Then change it to 6000 / 12, which is 500. Fairly simple and takes less than 10 seconds.

Cheers,

Florian

Yes, just round the numbers. No one will ask you to calculate the exact number. We're looking for analysts who can use calculation tools, not human calculators.