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:
319 comments Page 22 of 32.
KP Karthick said:
10 years ago
How you get 5?
Vishal Singh said:
10 years ago
How is it (4x + 8) = 5/2(x +8)?
It should be multiplied in 5/2(4x +8). Because he is the age of father.
Any body explain?
It should be multiplied in 5/2(4x +8). Because he is the age of father.
Any body explain?
Kjkj tikhir said:
10 years ago
In the last step why no one is taking care of : After 8 years, he would be two and a half times of Ronit's age.
TUHIN PALI said:
10 years ago
I solved in this way.
Per 8 years age decrease: (3x-5x/2) = x/2.
"1" " " x/16.
After 16 years = 16*x/16 = x.
3x-x = 2x.
After 16 years. So 2 times of Ronit's age. As father's age x.
Per 8 years age decrease: (3x-5x/2) = x/2.
"1" " " x/16.
After 16 years = 16*x/16 = x.
3x-x = 2x.
After 16 years. So 2 times of Ronit's age. As father's age x.
Srikath said:
10 years ago
First time more than 3 years of his son's age, after 8 years 2 and 1/2 years of Ronit age. Then finally 2 times of his son's age.
If you observe 1/2 times decreasing in ratio so its only guess.
If you observe 1/2 times decreasing in ratio so its only guess.
Sajan said:
10 years ago
Son age = x.
Father age = 3x+x.
4x+8 = 2.5 (x+8).
4x+8 = 5/2 (x+8).
2(4x+8) = 5(x+8).
8x+16 = 5x+40.
8x-5x = 40-16.
3x = 24.
x = 8.
Now follow the rest.
Father age = 3x+x.
4x+8 = 2.5 (x+8).
4x+8 = 5/2 (x+8).
2(4x+8) = 5(x+8).
8x+16 = 5x+40.
8x-5x = 40-16.
3x = 24.
x = 8.
Now follow the rest.
Chandan debnath said:
10 years ago
What is that? Father's age is 3 times of Ronit so is it came 4x?
Jon said:
10 years ago
If, X = 8 than, when son was 8 father was 24.
When son was 16 father will be 32.
How 32 is 2.5 multiplier of 16?
When son was 16 father will be 32.
How 32 is 2.5 multiplier of 16?
SWATI MANE said:
10 years ago
Please, explain last ratio.
Aishu said:
10 years ago
Ten years ago Ram was thrice as old as Sham was but 10 years hence; he will be only twice as old. What is Ram's present age?
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers