The present average age of a family of four member is 36 years.If the present age of the youngest member if the family be 12 years the average age the family at the birth of the youngest member was
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Answer: The present average age of a family of four members is 36 years. ⇒ Sum of other 3 members ages = 144 – 12 = 132. The sum of other 3 members at the time of birth of youngest = 132 – 12(3) = 96.
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32 Years
Step-by-step explanation:
sum of present ages =4×36=144
Present age of youngest member is =12 years
.•. age of family at the time of birth of youngest member is 144-(12×4)=96
.•. Average age of family members at birth of youngest member =96÷3
=32
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