The formula to calculate the Ideal Rent (R) is:
\[ R = \frac{I}{12} \times P \]
Where:
Let's say the annual income (I) is $60,000 and the percentage of income allocated for rent (P) is 0.30. Using the formula:
\[ R = \frac{60000}{12} \times 0.30 = 1500 \]
So, the Ideal Rent (R) is $1,500 per month.