Question

Which portion would you use to solve this problem?

Nine is 4% of what number?

A. 9/x = 40/100

B. 9/x = 4/100

C. 4/9 = x/100

D. X/9 = 4/100

Answer 1

$p\%=\dfrac{p}{100}\\\\4\%=\dfrac{4}{100}\\\\\dfrac{9}{x}=\dfrac{4}{100}\to\boxed{B.}$