1. The problem is to add the numbers 206 and 109 and then convert the result into Roman numerals. 2. First, add the numbers: $$206 + 109 = 315$$. 3. Now, convert 315 to Roman numerals. Roman numerals are based on the following symbols and values: - $I = 1$ - $V = 5$ - $X = 10$ - $L = 50$ - $C = 100$ - $D = 500$ - $M = 1000$ 4. Break down 315 into hundreds, tens, and units: - Hundreds: 300 = $CCC$ - Tens: 10 = $X$ - Units: 5 = $V$ 5. Combine these parts: $CCC + X + V = CCCXV$ 6. Therefore, the sum 315 in Roman numerals is $CCCXV$.