i need some help. what % of 30 = 12?

x/100 (30) = 12 This is the equivalent of the sentence " what % of 30=12"

Now you have 3x/10=12 multiply by 10 both sides

3x=120 divide by 3
x= 40

30<--------->100%
3<----------> 10%
12<---------> 40%

12/30 x 100%
= 1200/30 %
= 40%

40%

12/30 *100= 40

(12/30)*100 = 40

40%

40%

Let x by the percentage value

x/100 * 30 = 12

Therefore, x = 12 * 100 / 30
= 120/3
= 40 %

12/30 = .4 = 40%.