Question

Mr Pradhan got married 10 years ago. His and his wife's average age was 25 years at that time. Today, he has got an 8 year old son. Find the average age of his family. ​

Answer 1

present age of man=x

present age of women=y

present age of son=8

Step-by-step explanation:

• average of men and women before 10 years=25

• $\frac{x-10+y-10}{2} =25\\x+y-20=50\\x+y=70$

• now present average age of his family

• average=$=\frac{x+y+8}{3} \\=\frac{78}{3}\\= 26$