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In a chemistry class, there are 20 students, while a physics class has 30 students. If 10 students are enrolled in both classes, and the two classes are held at separate times, determine the value of k/8, where k represents the total number of students attending either class.
- 5
- 6
- 7
- 8
Correct answer: 5
Solution
Students in either class = 20 + 30 - 10 = 40 by inclusion-exclusion, so k = 40 and k/8 = 5. The stored answer (6) is wrong; correct value is 5.
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