Question

All students in Ridgewood Junior High School either got their lunch in the school cafeteria or brought it from home on Tuesday. 5% of students brought their lunch. 33 students brought their lunch. How many students in total are in Ridgewood Junior High School?

Answer 1

To calculate the total number of students in Ridgewood Junior High School, a proportion is used with the given percentages and number of students who brought their lunch. Solving the proportion shows that there are 660 students in total at the school.

Step-by-step explanation:

To find the total number of students in Ridgewood Junior High School, we can utilize the percentage given and the number of students who brought their lunch. Since 5% of the students brought their lunch and we know that number is 33 students, we can set up a simple proportion to calculate the total number of students.

Let's define the total number of students as T. The proportion we have based on the information given is

5/100 = 33/T, because 5% is the same as 5 out of 100.

To find T, we can cross-multiply and then divide both sides by 5:

5/T = 33/100

5T = 33 × 100
T = (33 × 100) / 5
T = 660

Therefore, there are 660 students in total at Ridgewood Junior High School.