There are 7 members in a family whose average age is 25 years. Ram who...
In order to find the average age of the family before Ram was born, we need to know the age of the youngest member of the family.
Since, we do not know the age of the youngest member, we can not calculate the total age of the family before Ram was born.
Hence, we can not calculate the answer with the given conditions.
Thus, D is the right choice.
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There are 7 members in a family whose average age is 25 years. Ram who...
Given information:
- There are 7 members in a family.
- Average age of the family is 25 years.
- Ram is 12 years old and is the second youngest in the family.
To find:
- Average age of the family just before Ram was born.
Solution:
Let's assume that Ram's age is x years at present. Then, his age at the time of his birth would be (x-12) years.
Let the sum of ages of the other 6 family members be y.
Then, the total sum of ages of all 7 family members at present would be:
x + (x-12) + y = 2x + y - 12
We know that the average age of the family is 25 years. Therefore, the sum of ages of all 7 family members before Ram was born would be:
(7 * 25) - x = 175 - x
Now, we need to find the average age of the family just before Ram was born. This can be calculated as:
[(175-x) - 12] / 6
Simplifying the above expression, we get:
(163 - x) / 6
As we do not have any information about the value of x, we cannot calculate the average age of the family just before Ram was born. Hence, the answer is "Cannot be determined".
Therefore, option D is the correct answer.
There are 7 members in a family whose average age is 25 years. Ram who...
Correct answer is option D