To determine what percent of Aira's monthly income she spent on entertainment, you need to know her total monthly income. The formula to calculate the percentage spent is:
\[ \text{Percentage spent} = \left( \frac{\text{Amount spent}}{\text{Total income}} \right) \times 100 \]
In this case, Aira spent $60 on entertainment. If you know her monthly income, you can plug in the values.
For example, if her monthly income is \( X \):
\[ \text{Percentage spent} = \left( \frac{60}{X} \right) \times 100 \]
To give you the exact percentage, please provide Aira's monthly income.