in a class the average age of 25 students is 12 years. when five students left

Question

in a class the average age of 25 students is 12 years. when five students left the class the average age became 11 years. what is the average age of the students who left the class ?

Options:

A . 13 years

B . 14 years

C . 15 years

D . 16 years

Answer: Option D
Explanation :

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