Is it accurate to use 350 instead of 365 for the numbers of days per year?
Many thanks for your great inputs! I like your method and will incorporate it.
Is it accurate to use 350 instead of 365 for the numbers of days per year?
Hi there,
Let me help with some tricks. Let's say we have to solve 1,000,000 / 1,800. We can do the following.
Mental Math
https://www.preplounge.com/en/consulting-forum/mental-math-help-7962
https://www.preplounge.com/en/consulting-forum/is-quick-mental-math-a-skill-that-can-be-learned-5210
Conceptual/Contextual Math
https://www.preplounge.com/en/consulting-forum/materials-for-practicing-conceptual-case-math-8016
https://www.preplounge.com/en/consulting-forum/math-concepts-6951
Key Math Equations
https://www.preplounge.com/en/consulting-forum/math-equations-their-use-7934
Math Practice
https://www.preplounge.com/en/consulting-forum/case-math-practice-6877
(edited)
Its not about speed and mental maths. Thats not the point. Obviously you need to show that you are comfortable with numbers.Take some extra seconds to do your calculations. Thats a better outcome than trying to do things quickly and getting the calcs wrong.
5% error margin is okay.
So, for calculations involving large numbers you can apply the following approaches:
So, for a large number divided by 365, its okay to use 350 or 400 but make sure to compensate for the error % or you could expand the numerator in multiples of 365. E.g. 4568/365 = (365*12 + 188)/365
(edited)
It's a deviation of ~4%, so that is fine. You might quickly check in with the interviewer if it's OK to give an approximate number or if they want you to calculate precisely.
Another trick that might be even easier is to divide by 400 and then add 10%.
Many thanks for your great inputs! I like your method and will incorporate it.
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