Question
Download Solution PDFThe average age of 7 members of a family is 75 years. But the average age of 6 of them is 74 years 6 months. What is the age of the seventh member of the family?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
The average age of 7 members of the family is 75 years
The average age of 6 of them is 74 years and 6 months
Concept used:
Sum = average × number
Calculation:
1 year = 12 months
1/2 year = 6 months
The total age of 7 members = 75 × 7 = 525 years
The total age of 6 members = 74.5 × 6 = 447 years
The age of the seventh member of the family = 525 - 447 = 78 years
The answer is 78 years.
Last updated on Jan 29, 2025
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