Multiple choice

In a university, there are 'm + 12' students, and their average age is 24 years. If n additional students with an average age of 50 years join, the class's average age increases by 4 years. If n + 5 more students with an average age of 32 years join, the average age of the class increases by 2 years. Find the value of 5(m - n).

  1. 47

  2. 57

  3. 65

  4. 75

  5. 85
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D Correct answer

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