The average age of an adult class is 40 years. 12 new students with an average a

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The average age of an adult class is 40 years. 12 new students with an average age of 32 years join the class, thereby decreasing the average by 4 years. The original strength of the class was-

Options:

A . 10

B . 11

C . 12

D . 15

Answer: Option C

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