For any X% = X/100. First, it may help to rearrange the sentence to be more like an equation:
You could word it like this: 18 is what percent of 72. [18 = (what percent) times 72]
Now we have: so 18 = (X/100)*72. Solving for X = 100*18/72 = 25, so it is 25%
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25% 72/4=18
18/25 x 100 = 72 percent Therefore, 18 is 72 percent of 25.
18/25 = 0.72 72% = 72/100 = 0.72 72 percent is the same as 18 out of 25.
72
18%.