8 years ago, the average age of Rahul's family consisting of 6 members was 35 years. One year ago a new baby was born in this family. What will be the average age of the family four years hence?

41 years

ATQ,

8 years ago sum of age of the family = 35×6 = 210

Present sum of age of the family = 210 + 6×8 + 1 = 259

Four years hence sum of age of the family = 259 + 7 ×4 = 287

Four years hence average age of the family = \(\frac{287}{7}\) = 41 years