Question

3 years ago the average age of A , b, c was 27 years and that of b and c , 5 years ago, was 20 years, A's present age

Answer 1

Answer:

A's present age is 40

Step-by-step explanation:

let A ,b , c be their present ages

acc to first condition 3 years ago their average was 27

therefore , ((A-3)+(b-3)+(c-3))/3 =27

acc to second condition

average age of b and c 5 years ago was 20

therefore, ((b-5)+(c-5))/2 = 20

solving second condition we get b+c =50

substituting this in first condition we get A = 40