**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?**

### Note

∴ Some of the present ages of A and B

= (18 × 2) + (4 × 2)

= (36 + 8) years

= 44 years.

∴ Some of the present ages of A, B, and C

= (24 × 3) years

= 72 years.

∴ C's present age = (72 - 44) years

= 28 years.

**∴ C’s age after 8 years = (28 + 8) years**

**= 36 years.**