Answer :

Sure! Let's calculate [tex]\(40\%\)[/tex] of a given variable [tex]\(st\)[/tex].

1. Understand the Percentage:
- [tex]\(40\%\)[/tex] means [tex]\(40\)[/tex] out of [tex]\(100\)[/tex], which can be represented as a fraction: [tex]\(\frac{40}{100}\)[/tex].
- Simplifying the fraction:
[tex]\[ \frac{40}{100} = 0.4 \][/tex]

2. Calculate [tex]\(40\%\)[/tex] of [tex]\(st\)[/tex]:
- Multiplying the decimal representation by the variable [tex]\(st\)[/tex]:
[tex]\[ 0.4 \times st \][/tex]

Therefore, [tex]\(40\%\)[/tex] of [tex]\(st\)[/tex] is:
[tex]\[ 0.4 \times st \][/tex]

So, the formula for [tex]\(40\%\)[/tex] of [tex]\(st\)[/tex] is [tex]\(0.4 \times st\)[/tex].