Answer
Find out the 12 is 90% of what number .
To prove
Percentage Formula
\(Percentage = \frac{Part\ value\times100}{Total\value}\)
As given
3 is 12%
Percentage = 12%
Part value = 3
Put the value in the Percentage formula
\(12= \frac{3\times100}{Total\ value}\)
\(Total\ value = \frac{300}{12}\)
Total value = 25
Therefore 3 is 12% of number 25 .
