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The average age of three friends A, B, C is 20 years. The average age of A and B is 19 years. What is the age of C?
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- 20 years
- 21 years
- 22 years
- 24 years
Correct Option: C
Given that :- The average age of three friends A, B, C = 20 years.
Total age of three friends A, B, C = 3 x 20 = 60 years.
The average age of A and B = 19 years.
Total age of of A and B = 2 x 19 = 38 years.
∴ Age of C = Total age of three friends A , B and C - Total age of of A and B
Age of C = 60 – 38 = 22 years
