Question

Three years ago the average age of A And B was 18 years. With C joining them now, the average becomes 22 years. How old is C now?

Answer 1

24 Years

Explanation:

Sum of ages of A and B, 3 years ago = (18×2)=36 years. Sum of ages of A,B and C, now = (22×3)=66years.

Sum of ages of A and B, now =(36+6) years=42 years

C's age = (66-42)years = 24 years

Answer 2

given=a and b has average of 18 years

c joined then the average =22 years

so,22-18 =4 years

hence, the age of c is = 4 yeasrs