in a class of 30 students , there are 22 students who study chemistry but not physics, 4 who study physics but not chemistry and who study neighter chemistry nor physics.
how many students in the class study physics
try proofreading your problem.
To determine the number of students who study physics, we need to find the number of students who study neither chemistry nor physics and subtract it from the total number of students in the class.
Given:
- Total number of students in the class = 30
- Number of students who study chemistry but not physics = 22
- Number of students who study physics but not chemistry = 4
- Number of students who study neither chemistry nor physics = ?
To find the number of students who study neither chemistry nor physics, we subtract the number of students who study chemistry but not physics and the number of students who study physics but not chemistry from the total number of students in the class:
Number of students who study neither chemistry nor physics = Total number of students - (Number of students who study chemistry but not physics + Number of students who study physics but not chemistry)
Number of students who study neither chemistry nor physics = 30 - (22 + 4)
Number of students who study neither chemistry nor physics = 30 - 26
Number of students who study neither chemistry nor physics = 4
Since we now know that there are 4 students who study neither chemistry nor physics, we can subtract this number from the total number of students in the class to determine the number of students who study physics:
Number of students who study physics = Total number of students - Number of students who study neither chemistry nor physics
Number of students who study physics = 30 - 4
Number of students who study physics = 26
Therefore, there are 26 students in the class who study physics.