Answer :

To find what percent 126 is of 315, you can follow these steps:

1. Write a Fraction: First, write the relationship between the two numbers as a fraction. The fraction is [tex]\( \frac{126}{315} \)[/tex].

2. Convert to a Percentage: To convert this fraction to a percentage, multiply it by 100. So, the calculation becomes:

[tex]\[
\left(\frac{126}{315}\right) \times 100
\][/tex]

3. Perform the Division: Divide 126 by 315. This will give you a decimal.

4. Multiply by 100: Take the result from the division and multiply it by 100 to convert it to a percentage.

After performing these calculations, you find that 126 is 40% of 315. Therefore, the answer is 40%.