To express one number as a percentage of another, divide the first number by the second number and then multiply by 100\%.
This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.
ScanSolve AI Answer
Step 1: To express one number as a percentage of another, divide the first number by the second number and then multiply by $100\%$.
$$ \text{Percentage} = \frac{\text{Part}}{\text{Whole}} \times 100\% $$
In this case, the part is $15$ and the whole is $20$.
Step 2: Substitute the values into the formula.
$$ \text{Percentage} = \frac{15}{20} \times 100\% $$
Step 3: Simplify the fraction.
$$ \text{Percentage} = \frac{3 \times 5}{4 \times 5} \times 100\% $$
$$ \text{Percentage} = \frac{3}{4} \times 100\% $$
Step 4: Perform the multiplication.
$$ \text{Percentage} = 0.75 \times 100\% $$
$$ \text{Percentage} = 75\% $$
The final answer is $\boxed{\text{75\%}}$.
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