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4. The average age of a husband and wife
was 23 years when they were married 5 years
ago. The average age of the husband, the wife
and a child who was born during the interval, is
20 years now. How old is the child now?
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Most Upvoted Answer
4. The average age of a husband and wife was 23 years when they were m...
Given Information:
- Average age of husband and wife when they got married 5 years ago = 23 years
- Average age of husband, wife, and child now = 20 years

Let's Calculate:

Step 1: Calculate Current Average Age of Husband and Wife
- 5 years ago, the average age of husband and wife = 23 years
- So, current total age of husband and wife = 23 + 5 + 5 + 5 (husband's age, wife's age, 5 years ago, and 5 years since then)
- Current total age of husband and wife = 38 years
- Current average age of husband and wife = 38 / 2 = 19 years

Step 2: Calculate Child's Age
- Total age of husband, wife, and child = 20 years x 3 = 60 years
- Total age of husband and wife = 38 years
- So, child's age = Total age of husband, wife, and child - Total age of husband and wife
- Child's age = 60 - 38 = 22 years
Therefore, the child is currently 22 years old.
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4. The average age of a husband and wife was 23 years when they were married 5 years ago. The average age of the husband, the wife and a child who was born during the interval, is 20 years now. How old is the child now?
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