Aptitude - Problems on Ages - Discussion
Discussion Forum : Problems on Ages - General Questions (Q.No. 1)
1.
Father is aged three times more than his son Ronit. After 8 years, he would be two and a half times of Ronit's age. After further 8 years, how many times would he be of Ronit's age?
Answer: Option
Explanation:
Let Ronit's present age be x years. Then, father's present age =(x + 3x) years = 4x years.
 |
(4x + 8) = | 5 | (x + 8) |
| 2 |
8x + 16 = 5x + 40
3x = 24
x = 8.
| Hence, required ratio = | (4x + 16) | = | 48 | = 2. |
| (x + 16) | 24 |
Discussion:
322 comments Page 20 of 33.
Kinnu said:
1 decade ago
Hey guys I had a simple logic for you.
Father=three times more of his son.
After 8 years father is 2 and a half of his son it means there is a reduce of 1/2.
So for another 8 years there will be a constant reduction of another half i.e; 2 times of his son.
Father=three times more of his son.
After 8 years father is 2 and a half of his son it means there is a reduce of 1/2.
So for another 8 years there will be a constant reduction of another half i.e; 2 times of his son.
Haritham said:
1 decade ago
How it is 4x ?
Aqeel Sadiq said:
1 decade ago
@Satyam.
Consider a ratio a:b, in x years given ratio will be ax:bx.
After 8 years it will be ax+8:bx+8.
Consider a ratio a:b, in x years given ratio will be ax:bx.
After 8 years it will be ax+8:bx+8.
Satyam said:
1 decade ago
How the ratio b 4x+16\x+8 ?
It should be 4x+8\x+8 is correct.
It should be 4x+8\x+8 is correct.
Deepak verma said:
1 decade ago
Why we are taking ratio at end of solution?
Supriya said:
1 decade ago
It is given in the question that Father is aged three times more than his son Ronit and v have taken Ronit's age as x and father's age as 3x.
Since father age is MORE THAN his son's age it is x+3x.
Since father age is MORE THAN his son's age it is x+3x.
Manisha Prasad said:
1 decade ago
Father is aged three times more than his son Ronit = four times of son's age. Is it justified?
Three times more = four times.
HOW can we say this?
Three times more means it could be 3x+1, or 3x+2,.....or five times....it could be anything..
So how can we say three times more = four times.
Three times more = four times.
HOW can we say this?
Three times more means it could be 3x+1, or 3x+2,.....or five times....it could be anything..
So how can we say three times more = four times.
Godwin said:
1 decade ago
It is clearly mentioned two and half times. Therefore 2and 1/2.
i.e., (2*2+1) /2 = 5/2.
i.e., (2*2+1) /2 = 5/2.
Janu said:
1 decade ago
After Means We have to add plus symbol. So after 8 years means 4x+8 then another after 8 years means add another plus 8 so it become 4x+8+8. So equation become 4x+16. Like that For Rohit x+16.
Gaurav mahajan said:
1 decade ago
I want to something why we divided in the last step by 4x+16/x+16 = 2.
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