SOLUTION: 42is 21% of what number?

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Question 258679: 42is 21% of what number?
Found 2 solutions by Fombitz, richwmiller:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Make a ratio.
Percent means out of 100.
42%2FX=21%2F100
X=4200%2F21=200
42 out of 200 is 21%.

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
21%=.21
.21x=42
multiply by 100
21x=4200
x=4200/21=200