15 is 25% of what number?
Understand the Problem
The question is asking us to find a number of which 15 represents 25%. We can solve this by setting up a simple equation where 25% of an unknown number (x) equals 15, then solving for x.
Answer
$60$
Answer for screen readers
$60$
Steps to Solve
- Convert the percentage to a decimal
To convert 25% to a decimal, divide by 100:
$25% = \frac{25}{100} = 0.25$
- Set up the equation
Let $x$ be the unknown number. We are given that 25% of $x$ is 15, so we can write the equation:
$0.25x = 15$
- Solve for $x$
To solve for $x$, divide both sides of the equation by 0.25:
$x = \frac{15}{0.25}$
$x = 60$
$60$
More Information
The number 60 represents the whole, when 15 is 25% of it.
Tips
A common mistake is setting up the equation incorrectly. For example, some might mistakenly calculate 25% of 15 instead of finding the number for which 15 is 25%. Also, forgetting to convert the percentage into a decimal or fraction before setting up the equation.
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