Data Sufficiency: Q49 set "A" UPSC CSE Prelims Paper-2 (CSAT)

WritiyIAS
Please wait 0 seconds...
Scroll Down and click on Go to Link for destination
Congrats! Link is Generated

Consider the Question and two Statements given below:

Question : What is the age of Manisha?

Statement-1: Manisha is 24 years younger than her mother.

Statement-2 : 5 years later, the ages of Manisha and her mother will be in the ratio 3 : 5.

Which one of the following is correct in respect of the Question and the Statements? 

(a) Statement-1 alone is sufficient to answer the Question
(b) Statement-2 alone is sufficient to answer the Question
(c) Both Statement-1 and Statement-2 are sufficient to answer the Question
(d) Both Statement-1 and Statement-2 are not sufficient to answer the Question

Solution:

Statement-2 alone is not sufficient to answer the question, but if taken together with Statement-1, the age of Manisha can be determined.

Let's assume the age of Manisha's mother as M.

From Statement-1, we know that Manisha is 24 years younger than her mother, so Manisha's age can be expressed as (M - 24).

Now, according to Statement-2, 5 years later, the ratio of Manisha's age to her mother's age will be 3:5. So, we can write:

(M - 24 + 5) : (M + 5) = 3 : 5

Simplifying this equation, we get:

3(M + 5) = 5(M - 19)

3M + 15 = 5M - 95

110 = 2M

M = 55

So, we know that Manisha's mother is 55 years old. Using Statement-1, we can find Manisha's age:

Manisha's age = Mother's age - 24 Manisha's age = 55 - 24 Manisha's age = 31

Therefore, the age of Manisha is 31 years.

In conclusion, Statement-2 alone does not provide enough information to determine Manisha's age, but when combined with Statement-1, we can calculate the age of Manisha.

So, final answer is (c).

 

Post a Comment

Oops!
It seems there is something wrong with your internet connection. Please connect to the internet and start browsing again.
AdBlock Detected!
We have detected that you are using adblocking plugin in your browser.
The revenue we earn by the advertisements is used to manage this website, we request you to whitelist our website in your adblocking plugin.
Site is Blocked
Sorry! This site is not available in your country.