Mathematics · Average
There are three departments, Physics, Chemistry, and Mathematics, in a college. The average ages of students in Physics, Chemistry, and Mathematics are 20 years, 24 years, and 30 years, respectively. The average age of all students in Physics and Chemistry combined is 22 years. The average age of all students in Chemistry and Mathematics combined is 26 years. What is the average age of all students in the three departments together?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 123.6 years✓
- 222 years
- 322.4 years
- 423 years
Correct answer
23.6 years
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