20 is 40 percent of what number
Understand the Problem
The question is asking us to find the number for which 20 is 40 percent. To solve this, we will set up an equation where 40 percent of a number equals 20.
Answer
50
Answer for screen readers
The number for which 20 is 40 percent is 50
Steps to Solve
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Set up the equation to represent the problem
We know that 20 is 40 percent of a number. Let's call that number $x$. So, the equation that represents this is:
$$ 0.4x = 20 $$
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Solve the equation for $x$
To isolate $x$, we need to divide both sides of the equation by 0.4:
$$ x = \frac{20}{0.4} $$
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Calculate the value of $x$
Perform the division to find $x$:
$$ x = 50 $$
The number for which 20 is 40 percent is 50
Tips
A common mistake might be to incorrectly convert the percentage to its decimal form. Remember that 40 percent should be written as 0.4 in the equation.
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