In a third grade class 2/5 of the students wear glasses. What fraction of the students do not wear glasses?
If 16 students wear glasses, how many students are in the class altogether?
5/5 - 2/5 = ? students do not wear glasses
2/5 = 16/x
Cross multiply and divide
2x = 80
x = 40 students in the class
5/5 - 2/5 = 3/5
To find the fraction of students who do not wear glasses, subtract the fraction of students who wear glasses from 1.
1 - 2/5 = 3/5
So, 3/5 of the students do not wear glasses.
Next, we can use the information provided to find the total number of students in the class.
If 2/5 of the students wear glasses and there are 16 students who wear glasses, we can set up the following equation:
(2/5) * Total number of students = 16
To solve for the total number of students, we can multiply both sides of the equation by the reciprocal of 2/5, which is 5/2:
Total number of students = 16 * (5/2)
Total number of students = 40
Therefore, there are 40 students in the class altogether.
To find the fraction of students who do not wear glasses, we need to subtract the fraction of students who wear glasses from 1. Since 2/5 of the students wear glasses, the fraction of students who do not wear glasses would be:
1 - 2/5 = 5/5 - 2/5 = 3/5
So, 3/5 of the students do not wear glasses.
To find the total number of students in the class, we can use the information that 2/5 of the students wear glasses. We are given that 16 students wear glasses.
Let's denote the total number of students in the class as "x".
So, 2/5 of the students wearing glasses is equal to 16 students:
(2/5)x = 16
To solve for x, we can multiply both sides of the equation by the reciprocal of 2/5, which is 5/2:
[(2/5)x] * (5/2) = 16 * (5/2)
Simplifying, we have:
x = (16 * 5) / 2
x = 80/2
x = 40
Therefore, there are 40 students in the class altogether.