500 units = 13/100 * X units

This says what your question says. 500 units is 13 percent of some unknown amount.

Some tips: “is” gets usually replaced with the “=” equals sign.

“Of”, like “half of, percent of” often gets replaced with the multiplication sign (*).

“Percent” is simply that number divided by 100.

Back to the question:

500 units = 13/100 * X units

You want all your numbers on one side of the equals sign, and everything you DON’T know on the other side (the “X”)

We proceed, dividing 500 by 13 percent, or (13/100)

500 units = 13/100 * X units

3846=X Units

Double-check our work, is 500 approximately 1-eighth of 3846? Yes. Our work is correct.

2) 13% of x=500

3) .13x=500

4) divide 500 by .13 x=500/.13

5) will have to round off