A family consists of two parents and three children. If the average age of the parents is 36 years and that of the children is 10 years, find the aver - Quantitative Aptitude MCQ UP Police Constable 2026 | ExamTest.live

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A family consists of two parents and three children. If the average age of the parents is 36 years and that of the children is 10 years, find the average age (in years) of the family.

Solution & Step-by-step Explanation

1. Calculate the total age of the parents: Total age of parents = 2 \times 36 = 72 years 2. Calculate the total age of the children: Total age of children = 3 \times 10 = 30 years 3. Find the combined total age and total number of family members: Total combined age = 72 + 30 = 102 years Total members = 2 + 3 = 5 4. Calculate the average age of the family: Average age = \frac{102}{5} = 20.4 years

Try it yourself before checking the explanation above.

A family consists of two parents and three children. If the average age of the parents is 36 years and that of the children is 10 years, find the average age (in years) of the family.

20

20.4

20.8

21

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