Question Details

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?

Options

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-I and Statement-2 are not sufficient to answer the Question

Show Answer

Correct Answer :

Option C

Both Statement-1 and Statement-2 are sufficient to answer the Question

Solution :

The correct option is Both Statement-1 and Statement-2 are sufficient to answer the Question.

Let us analyze the problem step-by-step to understand why both statements together are required and sufficient to find the age of Manisha.

Let the present age of Manisha be m years and the present age of her mother be M years.

Step 1: Analyzing Statement-1
According to Statement-1, Manisha is 24 years younger than her mother. We can write this relationship as the following equation:
M-m=24
Since we have one linear equation with two variables (m and M), we cannot find a unique value for Manisha's age, m, using Statement-1 alone. Therefore, Statement-1 alone is not sufficient.

Step 2: Analyzing Statement-2
Statement-2 states that 5 years later, the ratio of the ages of Manisha and her mother will be 3:5.
Five years from now, Manisha's age will be m+5 and her mother's age will be M+5. The ratio of their ages can be written as:
m+5M+5=35
Cross-multiplying, we get:
5(m+5)=3(M+5)
5m+25=3M+15
5m-3M=-10
Again, this is a single equation with two variables. We cannot determine a unique solution for m using Statement-2 alone. Therefore, Statement-2 alone is not sufficient.

Step 3: Combining Statement-1 and Statement-2
When we combine both statements, we obtain a system of two linear equations with two variables:
Equation (1): M=m+24
Equation (2): 5m-3M=-10
Substituting Equation (1) into Equation (2):
5m-3(m+24)=-10
5m-3m-72=-10
2m=62
m=31
Thus, by using both statements together, we can uniquely determine that Manisha's present age is 31 years. Therefore, both Statement-1 and Statement-2 are sufficient to answer the Question.

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