Question
Download Solution PDFThere are 3 members in a family. The average age of the father and mother is 40 years. The average age of the father, mother and daughter is 30 years. Find the age (in years) of the daughter.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
The average age of the father and mother = 40 years
The average age of the father, mother and daughter = 30 years
Formula used:
Average = Sum of value / Number of values
Calculation:
Total age of father and mother = 40 × 2 = 80 years
Total age of father, mother and daughter = 90
So the age daughter = 90 – 80 = 10 years
∴ The age of the daughter is 10 years.Last updated on Jul 19, 2025
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