Given information:
- Anita's monthly saving is $15,000.
- The expenses on rent, food, and savings are in the ratio 5:7:7.

Step 1: Calculate the total ratio
The total ratio of expenses is 5 + 7 + 7 = 19.

Step 2: Calculate the amount spent on rent
The ratio of rent to the total ratio is 5/19. Therefore, the amount spent on rent is (5/19) * $15,000 = $3,947.37 (approximately).

Step 3: Calculate the amount spent on food
The ratio of food expenses to the total ratio is 7/19. Therefore, the amount spent on food is (7/19) * $15,000 = $5,526.32 (approximately).

Step 4: Calculate the amount saved
The ratio of savings to the total ratio is 7/19. Therefore, the amount saved is (7/19) * $15,000 = $5,526.32 (approximately).

Step 5: Calculate the monthly income
The total expenses on rent and food are $3,947.37 + $5,526.32 = $9,473.69 (approximately).
Therefore, Anita's monthly income is the sum of her expenses and savings: $9,473.69 + $15,000 = $24,473.69 (approximately).

Explanation:
Anita spends a portion of her income on house rent and food. The expenses on rent, food, and savings are in the ratio 5:7:7. This means that out of every 19 parts of her income, 5 parts are spent on rent, 7 parts are spent on food, and 7 parts are saved.

To calculate the amount spent on rent, we multiply the ratio of rent (5/19) by the total monthly saving of $15,000. Similarly, we calculate the amount spent on food by multiplying the ratio of food expenses (7/19) by the total monthly saving.

The amount saved is also calculated using the ratio of savings (7/19) multiplied by the total monthly saving.

Finally, we calculate the monthly income by adding the total expenses on rent and food to the amount saved. The monthly income is the sum of the expenses ($9,473.69) and the savings ($15,000), which equals $24,473.69.