Aptitude - Average - Discussion
Discussion Forum : Average - General Questions (Q.No. 2)
2.
A family consists of two grandparents, two parents and three grandchildren. The average age of the grandparents is 67 years, that of the parents is 35 years and that of the grandchildren is 6 years. What is the average age of the family?
Answer: Option
Explanation:
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Video Explanation: https://youtu.be/OXLnoItd0MA
Discussion:
71 comments Page 3 of 8.
Divya Arora said:
1 decade ago
Can someone crack such problems with some other approach, shortcut maybe?
Susant said:
1 decade ago
Why 222 would became 315? Can someone please explain me?
Sridevi said:
1 decade ago
Family = Two grand parents = 2*67 = 134, two parents = 2*35 = 70, three grand children = 3*6 = 18.
After started in 134+70+18. Total members: 222/7 = 31.5/7.
After started in 134+70+18. Total members: 222/7 = 31.5/7.
Harini said:
1 decade ago
It's a wrong method already average of ages were given how can we count them as 7 members.
Siddhant said:
1 decade ago
In question they mention that 2 parents and 2 grandparents, parents mean father and mother both, then why 67 and 35 are multiplied by 2, why not 4. Because there are 2 parents.
Kamal Jeet said:
1 decade ago
According to Question : 2 Grandparents mean two members (Grandfather and Grandmother) Not mean to say (2 Grandfather or 2 Grandmother)!
And same follow as two Parents (Dad and Mom).
At Last 2 + 2 + 3 = 7.
I hope you understood.
And same follow as two Parents (Dad and Mom).
At Last 2 + 2 + 3 = 7.
I hope you understood.
Bhuwaneshwaran said:
8 years ago
How taking grandchildren has 3? They haven't mentioned count of grandchildren.
Pratiksha said:
1 decade ago
Can someone tell me that 31.5 is the write answer?
Shubham j said:
8 years ago
Thanks for the answer @Rupinderjit.
Shivu said:
10 years ago
Thank you for all the explanation of the solution.
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