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.
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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.
- 123.5 yearsfalse
- 215.5 yearsfalse
- 317.75 yearsfalse
- 418.5 yearstrue
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