3 ms·
What do you mean by “”standard””? Is introducing an unknown and solving an equation for that unknown to calculate a percentage a kind of standard?
by jonsen 6y ago
What do you mean by “”standard””? Is introducing an unknown and solving an equation for that unknown to calculate a percentage a kind of standard?
- gus_massa 6y agoNot here in Argentina, but I think it's the "standard" method for the kid.