Question

90 is 30% of what?

Answer 1

Is stands for equal
30 ---> .30
what stands for "n"
90 = .30 x n
Solve

Answer 2

would n be 100

Answer 3

let x be the unkown no
from the question
30% of x=90
30/100*x=90
30x=9000
x=100

Answer 4

ok i got it thanks