The individual calculations of the egg question seem within the realm of what most people can do to me. It’s possible others might have trouble keeping multiple numbers in mind at once, though. - multiply 30% with 40% (which can be simplified in a number of ways) - multiply 10% with 60% - add 6% + 12% - divide 12 by 18
It’s probably easier to aquire skills (like mental maths) with high intelligence, but no matter the intelligence, you still need to learn it.
Also, I’m not sure this is fully true. Personally, learning math was enough to automatically start doing it mentally, and I never needed to specifically try to learn it.
The individual calculations of the egg question seem within the realm of what most people can do to me. It’s possible others might have trouble keeping multiple numbers in mind at once, though.
- multiply 30% with 40% (which can be simplified in a number of ways)
- multiply 10% with 60%
- add 6% + 12%
- divide 12 by 18
Also, I’m not sure this is fully true. Personally, learning math was enough to automatically start doing it mentally, and I never needed to specifically try to learn it.