Step 1: Start with the fraction 39/15.

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

39 ÷ 15 = 2.6

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

2.6 × 100 = 260.0%

Final Answer: 39/15 as a percentage is 260.0%.