Question

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

Answer 1

3 yrs ago , total age of A & B = 18 x 2 = 36 yrs

Total present age = 36 + ( 3 x 2 ) = 42 yrs

Now, Total age of A, B, C = 22 x 3 = 66 yrs

age of c = 66 - 42 = 24 yrs

Hope it will help u

would u plz mark as a brainliest