Step 1: Start with the fraction 15/6.

Step 2: To convert a fraction into a percentage, divide the numerator by the denominator.

15 ÷ 6 = 2.5

Step 3: Multiply the result by 100 to get the percentage.

2.5 × 100 = 250.0%

Final Answer: 15/6 as a percentage is 250.0%.