Explanation:

- The problem states: When 175 is added to 12.5% of a number, the result is the number itself.

- Let the number be $x$.

- Set up the equation: $175+0.125x=x$.

- Simplify: $175=x-0.125x$.

- This simplifies to: $175=0.875x$.

- Solve for $x$: $x=\frac{175}{0.875}$.

- Calculation: $x=200$.

Your Answer: Option 2 - 200

- Options Explained:

- 280 is incorrect; doesn't satisfy the equation.

- 200 is the correct answer.

- 240 is incorrect; doesn't satisfy the equation.

- 300 is incorrect; doesn't satisfy the equation.