1. The problem is to convert the fraction $\frac{54}{60}$ into a percentage. 2. To convert a fraction to a percentage, use the formula: $$\text{Percentage} = \left(\frac{\text{Numerator}}{\text{Denominator}}\right) \times 100$$ 3. Substitute the values: $$\text{Percentage} = \left(\frac{54}{60}\right) \times 100$$ 4. Simplify the fraction $\frac{54}{60}$ by dividing numerator and denominator by their greatest common divisor, which is 6: $$\frac{\cancel{54}^9}{\cancel{60}^{10}}$$ 5. Now calculate the percentage: $$9 \times 10 = 90$$ 6. Therefore, $\frac{54}{60}$ as a percentage is $90\%$.