Question
Download Solution PDFThe average age of a family of 6 members is 25 years with the youngest member being 8 years old. What was the average age (in years) of the family just before the birth of the youngest member?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
The average of 6 family members is 25 years old.
The age of the youngest member of the family is 8 years.
Formula used:
Average = (Sum of total observations)/(Total number of observation)
Calculation:
Average = (Sum of total observations)/(Total number of observation)
⇒ (Sum of total observations) = Average × (Total number of observation)
Total sum of family = 6 × 25 = 150 years
Age of child is 8 years old, before his birth all 5 member of family are 8 years less than present age
So, New sum of age of family = 150 – 8 × 6 = 102 years
The required average = 102/5 = 20.4 years
∴ The required average is 20.4 years.
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