2. A family consists of three sons and
their parents. Average age of the
family is 20 years. Average of the ages
of second eldest son and parents is 24
years. Difference between parents age
together and second eldest son is 48
years. Ratio of ages of second eldest
son and eldest son is 2:3 What is the
age of the youngest son?
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Answer:
the age of the youngest son is 12
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