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:
326 comments Page 16 of 33.
SWATI MANE said:
1 decade ago
Please, explain last ratio.
Jon said:
1 decade 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?
Chandan debnath said:
1 decade ago
What is that? Father's age is 3 times of Ronit so is it came 4x?
Sajan said:
1 decade 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.
Srikath said:
1 decade 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.
TUHIN PALI said:
1 decade 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.
Kjkj tikhir said:
1 decade 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.
Vishal Singh said:
1 decade 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?
KP Karthick said:
1 decade ago
How you get 5?
Vinitha said:
1 decade ago
Any shortcut to solve this type of problem? please share.
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