25 is 4% of 625

Follow the following steps to work out percentage problems of the form "25 is 4 percent of what number?".

- Write down the equation: (4 / 100) * x = 25
- Solve for x: x = 25 / (4 / 100)
- x = (25 * 100) / 4
- or, x = 625

In a standard calculator, you can arrive at the answer by pressing **25** × 100 ÷ **4**.

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