To find out what number 15 is 30% of, we can set up an equation. Let’s denote the unknown number as x. Since 30% can be written as a fraction, we know that:
15 = 0.30 * x
Now, to find x, we can rearrange the equation:
x = 15 / 0.30
Calculating this gives:
x = 50
Thus, 15 is 30% of 50.