the average of the age of a, b, c is 25 years, while the average of the age of

Question

the average of the age of a, b, c is 25 years, while the average of the age of a, b and d is 28 years. if d is 28 years old, then what is the age of c?

Options:

A . 17 years

B . 18 years

C . 19 years

D . 20 years

Answer: Option C
Explanation :

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