Aptitude - Problems on Ages - Discussion
Discussion Forum : Problems on Ages - General Questions (Q.No. 15)
15.
The age of father 10 years ago was thrice the age of his son. Ten years hence, father's age will be twice that of his son. The ratio of their present ages is:
Answer: Option
Explanation:
Let the ages of father and son 10 years ago be 3x and x years respectively.
Then, (3x + 10) + 10 = 2[(x + 10) + 10]
3x + 20 = 2x + 40
x = 20.
Required ratio = (3x + 10) : (x + 10) = 70 : 30 = 7 : 3.
Discussion:
78 comments Page 4 of 8.
Vaishnavi said:
9 years ago
Express the following linear equation in two variables by talking present ages of his father and son as x and y respectively.
Age of father 5 years ago was two years more than 7 times the age of his son at that time.
Can anyone help me?
Age of father 5 years ago was two years more than 7 times the age of his son at that time.
Can anyone help me?
Aquarius said:
9 years ago
Guys, can anyone tell me about this problem?
Sushil was thrice as old as Snehal 6 years back. Sushil will be5/3 times as old as Snehal 6 years hence. How old is Snehal today?
Why can't we take Snehal Current age be x?
6yrs ago be x-6.
Sushil ag 6ysr ago be 3(x-6) of Snegal age.
6 yrs hence from current age Sushil be,
3(x-6)+6+6= 5/3(x)+6.
Is is the correct way?
Sushil was thrice as old as Snehal 6 years back. Sushil will be5/3 times as old as Snehal 6 years hence. How old is Snehal today?
Why can't we take Snehal Current age be x?
6yrs ago be x-6.
Sushil ag 6ysr ago be 3(x-6) of Snegal age.
6 yrs hence from current age Sushil be,
3(x-6)+6+6= 5/3(x)+6.
Is is the correct way?
Paritosh said:
8 years ago
Let Akash age is x+4, Akansha age is x.
from the given relation 4x = 3(x+4)
now x=12,x+4=16
Their combined age is 12+16=28.
from the given relation 4x = 3(x+4)
now x=12,x+4=16
Their combined age is 12+16=28.
Namgay said:
8 years ago
Why to take 10 in order to find the present ratio?
Mannai shakthi said:
8 years ago
Please give detailed answer and explanation about this sum. How will add the ages when it is mentioned as ago?
Iba Krish said:
8 years ago
Very useful @Nagu.
SHUBHAM said:
7 years ago
Ago means subtract so, X+10-10 this statement may be right.
Rachana said:
7 years ago
@Shubham.
Actually, it is not right.
Because initially the age of the boy and his dad are 'x' & '3x' respectively.
10yrs ago it was the case.
Presently, their ages are (x+10) & (3x+10) respectively.
Actually, it is not right.
Because initially the age of the boy and his dad are 'x' & '3x' respectively.
10yrs ago it was the case.
Presently, their ages are (x+10) & (3x+10) respectively.
Marpu Sruthi said:
6 months ago
Good session very clear explanations. Thanks all.
Archi said:
2 decades ago
For 10 years ago it should be minus 10 give me reason please ?
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