Step 1: Start with the fraction 10/30.

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

10 ÷ 30 = 0.3333

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

0.3333 × 100 = 33.33%

Final Answer: 10/30 as a percentage is 33.33%.