Question

15 is 0.4% of what number?

Answer 1

15 is 0.4% of what number?

so, let's say b represents that number. Let's put that in equation form.

b*4%=15 
4%=0.04              <------ decimal form
b*0.04=15            <------ in the equation
15/0.04=b            <------ signs switched

b=375

Hope I helped! please rate me the brainliest!

Answer 2

375 is the answer....Give other the brainliest :D