we know that
<u>Standard Form</u> is also known as Scientific Notation, is a method of writing numbers that accommodates value excessively large or small to be suitably written in Standard Decimal Notation
in this problem we have

Remember that

so

<u>convert to standard form </u>

therefore
<u>the answer is</u>

12
x 10
______
120
it's pretty simply,sorry if I got it wrong,i'm kinda tired<span />
Step-by-step explanation:
80:100=x:20
x=80×20/100=16
The answer to this problem is =x