Aptitude - Problems on Ages - Discussion
Discussion Forum : Problems on Ages - General Questions (Q.No. 3)
3.
A father said to his son, "I was as old as you are at the present at the time of your birth". If the father's age is 38 years now, the son's age five years back was:
Answer: Option
Explanation:
Let the son's present age be x years. Then, (38 - x) = x
2x = 38.
x = 19.
Son's age 5 years back (19 - 5) = 14 years.
Discussion:
100 comments Page 4 of 10.
Kavya said:
1 decade ago
How can we use same variable for both son's present age and father's age at the time of birth?
Shahid said:
1 decade ago
38-x age of father at born time.
Krishna said:
1 decade ago
Here is the clarity:
Let present age of son = x.
Given father present age = 38.
According to logic when son age is 0 (during birth), fathers age is x.
Then when son's age is x, then father's age is 38.
So x-0 = 38-x.
2x = 38.
x = 19.
Then 5 years back of son's age it will be 14 years.
Hope you understood.
Let present age of son = x.
Given father present age = 38.
According to logic when son age is 0 (during birth), fathers age is x.
Then when son's age is x, then father's age is 38.
So x-0 = 38-x.
2x = 38.
x = 19.
Then 5 years back of son's age it will be 14 years.
Hope you understood.
Ramya said:
1 decade ago
How can you subtract the past age of father from his present age to get get the present age of son? I can't get you.
Kira said:
8 years ago
@Vijay Ananad.
Nicely explain thanks.
Nicely explain thanks.
Seikhokai Touthang said:
1 month ago
If f is the father's age = 38
And let the son's age be S or X.
And then 2x= 38.
So if the 2 go there in 38 side, it is a division
And then divide them = 19.
So in the question asked in the last, five year back it means -5.
So, 19 - 5 =14 so option A.
And let the son's age be S or X.
And then 2x= 38.
So if the 2 go there in 38 side, it is a division
And then divide them = 19.
So in the question asked in the last, five year back it means -5.
So, 19 - 5 =14 so option A.
Astik thombare said:
6 years ago
0-------------38
38-----------38+38 i.e.2*38.
From above we can conclude that son's age =father's age/2,
son's age =38/2=19,
hence,age of son before 5 years =19-5=14.
Son's age = 14 yrs.
38-----------38+38 i.e.2*38.
From above we can conclude that son's age =father's age/2,
son's age =38/2=19,
hence,age of son before 5 years =19-5=14.
Son's age = 14 yrs.
Narayan said:
6 years ago
@All.
Simply the calculation is; (father's present age - sons present age) = father's age at the time of birth.
But father's age at the time of the birth of his son = son's present age.
Simply the calculation is; (father's present age - sons present age) = father's age at the time of birth.
But father's age at the time of the birth of his son = son's present age.
Nikhil said:
6 years ago
Suppose father age is 37 years now, then what will be son's age?
Shree said:
7 years ago
@Vijay Anand.
It's a good explanation. Thanks.
It's a good explanation. Thanks.
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