Answer:
50% of a number means that we are taking half of a number. Since 11 is 50% of a number that means that we need to multiply 11 by 2 to get the original number. When we multiply 11 by 2 we get 22 and that is closest to option A which is 20.
Answer: Option A,
![20](https://img.qammunity.org/2023/formulas/mathematics/high-school/rwbk0tyrifffzzsq1m84hyiewuverxyehb.png)