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A family has two grandparents, two paren...

A family has two grandparents, two parents and four children. Two years ago, the average age of grandparents was 72 years. A year ago, the average age of parents was 36 years. Currently, the average age of children is 12 years. What is the current average age of the family?
किसी परिवार में दो दादा-दादी, दो माता-पिता और चार बच्चे है | दो साल पहले, दादा-दादी की औसत आयु 72 वर्ष थी | एक साल पहले, माता-पिता की औसत आयु 36 वर्ष थी | वर्तमान में, बच्चों की औसत आयु 12 वर्ष है | परिवार की वर्तमान औसत आयु कितनी है ?

A

32 years

B

33.75 years

C

32.75 years

D

33 years

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PINNACLE-AVERAGE-EXERCISE
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  2. How many kg of salt costing Rs. 28 per kg must be mixed with 6.6 kg of...

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  3. A family has two grandparents, two parents and four children. Two year...

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  4. Age of A is 6 years more than three times the age of B. After three ye...

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  5. A person was asked to guess his own weight. He estimated his weight to...

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  6. Out of 6 numbers, the sum of the first 5 numbers is 7 times the 6th nu...

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  7. The average of the first four numbers is three times the fifth number....

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  8. The average of five consecutive even numbers is M. If the next five ev...

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  9. The average of twelve numbers is 45.5. The average of the first four n...

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  10. The average weight of some students in a class was 58.4kg. When 5 stud...

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  11. The average age of a number of persons in a group’ was calculated as 3...

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  12. The average of 24 numbers is 56. The average of the first 10 numbers i...

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  13. The average of some numbers is 54.6. If 75% of the numbers are increas...

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  14. The average height of 5 boys is 175 cm. A sixth boy joined the group a...

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  15. The average marks of 30 boys is 88, and when the top scores were exclu...

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  16. 24 students collected money for donation. The average contribution was...

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  17. The average of 60 student’s results is 38. If the average of the first...

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  18. The average of five consecutive odd numbers is m. If the next three od...

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  19. The average score in Mathematics of 90 students of sections A and B to...

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  20. The average age of A,B and C is 20 years, and that of B and C is 25 ye...

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