10% of ? is 20 I really need help bad

20 is 10% of 200

Step-by-step explanation:

We have, 10% × x = 20

or,  

10

100

× x = 20

Multiplying both sides by 100 and dividing both sides by 10,

we have x = 20 ×  

100

10

x = 200

If you are using a calculator, simply enter 20×100÷10, which will give you the answer.