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

  1. Set up the equation

We start with the equation given:

$$ 0.4 \cdot x = 36 $$

where ( x ) is the number we want to find.

  1. Isolate the variable

To solve for ( x ), we need to divide both sides of the equation by 0.4:

$$ x = \frac{36}{0.4} $$

  1. 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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