### Four years ago, the average age of A and B was 18 years. At present the average age of A, B, and C is 24 years. What would be the age of C after 8 years?

A. 25 years B. 28 years C. 32 years D. 36 years Answer: Option D

### Solution(By Apex Team)

Sum of the present ages of A and B = (18 × 2 + 4 × 2) years = 44 years Sum of the present ages of A, B and C $\begin{array}{l}\text{= (24 × 3) years}\\ \text{= 72 years}\\ \text{C’s present age}\\ \text{= (72 – 44) years}\\ \text{= 28 years}\\ \text{∴ C’s age after 8 years}\\ \text{= (28 + 8) years}\\ \text{= 36 years}\end{array}$

A. 20
B. 21
C. 28
D. 32

A. 18
B. 20
C. 24
D. 30

A. 10 years
B. 10.5 years
C. 11 years
D. 12 years