the average of a and b is 20 years. if c were to replace a, the average would be 19 and if c were to replace b, the average would be 21. what are the ages of a, b and c ? Options: A . &nbsp18 years, 16 years, 20 years B . &nbsp22 years, 18 years, 20 years C . &nbsp21 years, 18 years, 12 years D . &nbsp13 years, 17 years, 24 years

the average of a and b is 20 years. if c were to replace a, the average would

Question

the average of a and b is 20 years. if c were to replace a, the average would be 19 and if c were to replace b, the average would be 21. what are the ages of a, b and c ?

Options:

A . 18 years, 16 years, 20 years

B . 22 years, 18 years, 20 years

C . 21 years, 18 years, 12 years

D . 13 years, 17 years, 24 years

Answer: Option B
Explanation :

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