40 of what number is 36
Understand the Problem
The question is asking to find the number such that 40% of it equals 36. To solve this, we can set up the equation 0.4 * x = 36 and solve for x.
Answer
The number is \( 90 \).
Answer for screen readers
The number is ( x = 90 ).
Steps to Solve
- Set up the equation
We start with the equation given:
$$ 0.4 \cdot x = 36 $$
where ( x ) is the number we want to find.
- Isolate the variable
To solve for ( x ), we need to divide both sides of the equation by 0.4:
$$ x = \frac{36}{0.4} $$
- Perform the division
Now let's calculate ( \frac{36}{0.4} ):
$$ x = \frac{36}{0.4} = 90 $$
The number is ( x = 90 ).
More Information
This means that if you take 40% of 90, you will indeed get 36. This kind of problem is often encountered in percentage calculations in real-life situations, such as discounts and statistics.
Tips
- Forgetting to convert the percentage to a decimal correctly (e.g., writing 40% as 0.4).
- Not performing the division correctly, especially when dealing with decimals.
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