Step 1: Start with the fraction 3/18.

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

3 ÷ 18 = 0.1667

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

0.1667 × 100 = 16.67%

Final Answer: 3/18 as a percentage is 16.67%.