Step 1: Start with the fraction 20/18.

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

20 ÷ 18 = 1.1111

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

1.1111 × 100 = 111.11%

Final Answer: 20/18 as a percentage is 111.11%.