Aptitude - Problems on Ages - Discussion

Discussion Forum : Problems on Ages - Data Sufficiency 3 (Q.No. 2)
Directions to Solve

Each of these questions is followed by three statements. You have to study the question and all the three statements given to decide whether any information provided in the statement(s) is redundant and can be dispensed with while answering the given question.

2.
 What is the difference between the present ages of Ayush and Deepak? I. The ratio between Ayush's present age and his age after 8 years 4 : 5. II. The ratio between the present ages of Ayush and Deepak is 4 : 3. III. The ratio between Deepak's present age and his age four years ago is 6 : 5.
Any two of I, II and III
I or III only
Any one of the three
All I, II and III are required
Even with all I, II and III, the answer cannot be obtained.
Explanation:

Clearly, any two of the given statements will give the answer and in each case, the third is redundant.

Discussion:
11 comments Page 1 of 2.

Asmi said:   3 years ago
I'm not understanding. Please anyone explain.

Asmi said:   3 years ago

Mallappa said:   5 years ago
Option A is correct we can solve with any of two statements out of 3.

Statement 1 will give Ayush age say 32.
From statement 2 we know the ratio of present ages of both say 4/3.
Hence 4=32.
In order to make LHS=RHS.
we have to multiply the factor of 8.

Then we get present age of deepak 24..
Statement 3 gives the present age of Deepak say 24.
Then again by equating LHS=RHS we get the factor 8.
Hope it helps.
(2)

Prabha said:   5 years ago
(1)

Sudheer said:   6 years ago
The option should be "'any of the three".

Because the question is to find out the redundant one.

Kartikeya said:   8 years ago
Option A: Any TWO of the three seems to work.

I and II or II and III are obvious choices.

For using I and III:

Statement I gives Ayush's present age.
Statement II gives Deepak's present age.

Hence, the difference can be obtained.

Sanjiv said:   8 years ago
How can we figure out the age difference using option (I) and (III) ?

Abhishek thakur said:   9 years ago
How can first option alone can give the answer of Deepak's age. It will give the age of Ayush. To get both their ages we need 2 of it.

Akash said:   9 years ago
Answer should be option C because any one option is redundant.