Q:

The average age of a family of 5 members is 44 years. When the son marries and his wife joins the family, the average age of the family is reduced by 2.5 years. After 2 years of marriage, a child is born into the family. Find the average age of daughter-in-law and child after 5 years of son's marriage.

• 1
  23.5 years
• 2
  15.5 years
• 3
  17.75 years
• 4
  18.5 years