Mary has a monthly salary of $1,200. She spends $240 per month on food. What percent of her monthly salary does she spend on food?

100(240/1200) = ______%

20%

To find out what percent of Mary's monthly salary is spent on food, we need to divide the amount spent on food by her monthly salary and then multiply by 100.

Step 1: Calculate the percentage
Percentage = (Amount spent on food / Monthly salary) * 100

Step 2: Substitute the given numbers into the formula:
Percentage = ($240 / $1,200) * 100

Step 3: Simplify the equation:
Percentage = (1/5) * 100

Step 4: Calculate the final answer:
Percentage = 20%

Therefore, Mary spends 20% of her monthly salary on food.