75% of the number is 27.75. Hence, option A is correct.
Let's denote the number as x. The given information can be expressed as an equation:
![\[55\% \, \text{of} \, x - 25\% \, \text{of} \, x = 11.10\]](https://img.qammunity.org/2024/formulas/mathematics/college/ln907vx77e4jkargtxepezev3jksgzx7zk.png)
Translate the percentages into decimals:
![\[0.55x - 0.25x = 11.10\]](https://img.qammunity.org/2024/formulas/mathematics/college/b9apzqxut4ly62941e9xmizs3trutir0js.png)
Combine like terms:
0.3x = 11.10
Now, solve for x:
![\[x = (11.10)/(0.3)\]](https://img.qammunity.org/2024/formulas/mathematics/college/kmyxp74pj3yu88tp866j002jnx5x7mpttb.png)
![\[x \approx 37\]](https://img.qammunity.org/2024/formulas/mathematics/college/s91zergsaxk1vvjm13t5zadbtw3rna7g7v.png)
Now that we know x, we can find 75% of that number:
![\[75\% \, \text{of} \, x = 0.75 * 37\]](https://img.qammunity.org/2024/formulas/mathematics/college/klr5anenng83u91zmdx23l20xz898mix82.png)
![\[75\% \, \text{of} \, x = 27.75\]](https://img.qammunity.org/2024/formulas/mathematics/college/pavrwtlpxn4sr3umearsa6vq7qtf1cv20c.png)
Therefore, 75% of the number is 27.75. Hence, option A is correct.