Question
The average age of the husband, wife, and their child 4
years ago was 24 years and that of the husband and the child 5 years ago was 19 years. The present age of the wife is:Solution
The average age of (husband, wife, child) before 4 years=24 Total age of (husband, wife, child) before 4 years=24×3=72 Total age of (husband, wife, child) present =72+12=84 years. The average age of husband and child before 5 years=19 years Total age of husband and child before in present = (19×2) +10=48 years so now the age of the wife = is 84-48=36 years
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