Question

12 is 30 percent of

Answer 1

`x-\ number\\\\ 30\%=(12)/(x)\ \ \ \ | multiply\ by\ x\ \ and\ \ \ x \\eq 0\\\\ 30\%x=12\\\\ (30)/(100)x=12\\\\ 0.3x=12\ \ \ \ | divide\ by\ 0.3\\\\ x=40\\\\ 12\ is\ 30\%\ of\ 40.`

Answer 2

let
x-----------> the number

we know that

`30` % is equal to
`(30)/(100)`

`((30)/(100))*x=12`
multiply by 100 both sides

`30*x=1200`
divide by 30 both sides

`x= (1200)/(30) \\ x=40`

the answer is
the number is
`40`