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:
69 comments Page 3 of 7.
Divya Arora said:
10 years ago
Can someone crack such problems with some other approach, shortcut maybe?
Faizal Hussain said:
1 decade ago
Please explain, why for parents also your multiplying by 2 and for two grandparents also multiplying by 2. Why can't we consider like this.
For parents means = Father and mother, hence its multiplied by 2.
For 2 grandparents means = Father's father, father's mother, mother'father, mothers mother, hence it should be 4.
Please some one reply am I right or wrong, if no please explain.
For parents means = Father and mother, hence its multiplied by 2.
For 2 grandparents means = Father's father, father's mother, mother'father, mothers mother, hence it should be 4.
Please some one reply am I right or wrong, if no please explain.
Changlu said:
1 decade ago
How comes 5/7 I got 31.7142?
Ramesh said:
1 decade ago
How the 5 is coming? Can anyone explain what is remainder?
Pratiksha said:
9 years ago
Can someone tell me that 31.5 is the write answer?
Shivu said:
9 years ago
Thank you for all the explanation of the solution.
Shivu said:
9 years ago
Friends, how we write 222/7 into 31*5/7? Please tell me.
Arvind said:
9 years ago
Can we add all the avgs and divide by 3?
The avg of grandparents, grandchildren and parents are given
67 + 35 + 6/3 = 36.
Am I right?
The avg of grandparents, grandchildren and parents are given
67 + 35 + 6/3 = 36.
Am I right?
Jatin007 said:
9 years ago
No @Arvind.
The number of people is 7 so we have to divide with 7. Read the question carefully. You will find the answer.
The number of people is 7 so we have to divide with 7. Read the question carefully. You will find the answer.
Masterneeji said:
1 decade ago
@Tamilazhagan.
Parent means either mummy or daddy.
Parents means couple so we (67*2+35*2+6*3)/2+2+3 = 222/7 = 31 5/7.
Parent means either mummy or daddy.
Parents means couple so we (67*2+35*2+6*3)/2+2+3 = 222/7 = 31 5/7.
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