Question

What is the answer to the question 25% of what is 21?

Answer 1

Let, that number = x
It would be: x * 25% = 21
x * 0.25 = 21
x = 21 / 0.25
x = 84

In short, Your Answer would be 84

Hope this helps!

Answer 2

If we call the number "x" then:
x*25%=21
x*25/100=21
x=21*4
x=84

Hope this helps. :)