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:
99 comments Page 10 of 10.
TITASH.810 said:
1 decade ago
How can we say that Both X is same variable?
I mean why 38-X = X,
Why not 38 - X = Y, where Y is Father's age.
At the time of Son's birth.
I mean why 38-X = X,
Why not 38 - X = Y, where Y is Father's age.
At the time of Son's birth.
Suraj dalvi said:
1 decade ago
Father current year 38.
Son age consider x.
The sons age = father's.
Age at the time son's birth.
Father's present age - Son's age = Father's age
At the time of Son's birth.
38-x = x.
38 = x+x.
38 = 2x.
x = 38/2 .
x = 19.
Son's age 5 years back (x-5)=(19-5)=14 is correct answer !
Son age consider x.
The sons age = father's.
Age at the time son's birth.
Father's present age - Son's age = Father's age
At the time of Son's birth.
38-x = x.
38 = x+x.
38 = 2x.
x = 38/2 .
x = 19.
Son's age 5 years back (x-5)=(19-5)=14 is correct answer !
Dhanendr said:
1 decade ago
I still not got exact intelligible meaning of that sentence told by father.
Khushi said:
1 decade ago
Father's age now is 38; let son's age be x.
Son's current age = age of his father on his birth.i.e. x.
If we subtract son's current age from father's current age ie x=(38-x).
We get father's age @ the time of son's birth which is x.
And we observe father's age @the time of son's birth = x = son's current age.
38-x = x.
Son's current age = age of his father on his birth.i.e. x.
If we subtract son's current age from father's current age ie x=(38-x).
We get father's age @ the time of son's birth which is x.
And we observe father's age @the time of son's birth = x = son's current age.
38-x = x.
Bhagyashri said:
1 decade ago
Father's age (38-x).
Son's age x.
Son's age before 5 years (x-5).
Father's age before 5 years (38-x) -5.
(38-x) -5 = (x-5).
33-x = x-5.
33+5 = x+x.
38 = 2x.
x = 19.
Therefore son's age before 5 years (x-5) = (19-5) = 14.
Son's age x.
Son's age before 5 years (x-5).
Father's age before 5 years (38-x) -5.
(38-x) -5 = (x-5).
33-x = x-5.
33+5 = x+x.
38 = 2x.
x = 19.
Therefore son's age before 5 years (x-5) = (19-5) = 14.
K. Jay Prakash Rao said:
1 decade ago
Let the son's present age be x years. Then, (38 - x) = x. -> why x is subtracted from 38?
2x = 38. -> how 2x = 38 its not mentioned in the question?
x = 19.
Son's age 5 years back (19 - 5) = 14 years.
2x = 38. -> how 2x = 38 its not mentioned in the question?
x = 19.
Son's age 5 years back (19 - 5) = 14 years.
Nayak said:
1 decade ago
Hello Everyone
I like everyone the way u think all guys. Really it help me a lot to analyze the problems.. thanks
I like everyone the way u think all guys. Really it help me a lot to analyze the problems.. thanks
Guru Praveen said:
1 decade ago
Hi Friends,
In the question itself it is clearly said Son's Present age is same as Father age at the time of his son's birth.
So sons age will be half the age of father at any time.
So if sons age is x, then father age is 2x.
Given father present age is 38, so obviously son's present age will be half of father's hence sons age is 38/2 which is 19 years.
Sons age before 5 years is 19-5=14.
In the question itself it is clearly said Son's Present age is same as Father age at the time of his son's birth.
So sons age will be half the age of father at any time.
So if sons age is x, then father age is 2x.
Given father present age is 38, so obviously son's present age will be half of father's hence sons age is 38/2 which is 19 years.
Sons age before 5 years is 19-5=14.
Kusuma said:
1 decade ago
How can we tell that the son age is exactly half to his father age and not any other option.
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