High School

Students in a certain program have to take both Biology 101 and Chemistry 101. There are a total of 118 students in the program. Currently, 65 students are taking Biology 101, and 60 students are taking Chemistry 101. Additionally, 20 students are not taking either course.

How many students are currently taking both Biology 101 and Chemistry 101?

Answer :

Final answer:

To find the number of students taking both Biology 101 and Chemistry 101, use the principle of inclusion-exclusion: add the number of students taking each course, then subtract the number of students who are not taking either course.

Explanation:

To find the number of students taking both Biology 101 and Chemistry 101, we can use the principle of inclusion-exclusion. We start by adding the number of students taking Biology 101 and Chemistry 101 together, which is 65 + 60 = 125. However, this count includes the 20 students who are not taking either course. So, we subtract 20 from the total count: 125 - 20 = 105. Therefore, there are 105 students from this program currently taking both Biology 101 and Chemistry 101.

Learn more about Inclusion-Exclusion Principle here:

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