There are 4 lunch choices in a school cafeteria: Salad, Pizza, Spaghetti, and Sub Sandwiches. The percentage of students that chose salad is 15%. If 45 students chose salad, what is the total number of students that ate lunch?
Total number of students that ate lunch = 300
To determine the total number of students that ate lunch, we need to find the total population that the 45 students represent. Since 15% of the students chose salad and we know that 45 students chose salad, we can set up the following equation:
15% = 45 students
To find the total number of students, we can divide both sides of the equation by 15% (or 0.15 as a decimal):
45 students / 0.15 = total number of students
From this, we calculate:
total number of students = 300 students
Therefore, the total number of students that ate lunch is 300.
To find the total number of students that ate lunch, we need to determine the total population of students in the school cafeteria.
Let's use the given information that 15% of the students chose salad. We can set up a proportion to find the total number of students, represented by "x":
(15/100) = (45/x)
To solve for "x", we can cross multiply:
15x = 45 * 100
15x = 4500
Next, divide both sides of the equation by 15 to solve for "x":
x = 4500 / 15
x = 300
Therefore, the total number of students that ate lunch is 300.