Question

what percentage of 30 = 12

Answer 1

A percentage is just a ratio with 100. \(x\% = x/100\)

That means our problem is simply

\[\frac{12}{30} = \frac{x}{100}\]You can solve that by cross-multiplication:
\[12*100 = 30*x\]Now divide both sides by 30 to get the value of \(x\).

Answer 2

I was just going to say that. you beat me to the punch. Good Job.

Answer 3

40%