New NABARD Grade A : How to prepare ESI for Prelims & Mains- Sources & Strategy
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Question

Three years ago, Ritu was twice as old as Rajni, and currently, the total of their ages is 36 years. What will Ritu's age be four years from now?

A 18 years Correct Answer Incorrect Answer
B 21 years Correct Answer Incorrect Answer
C 25 years Correct Answer Incorrect Answer
D 12 years Correct Answer Incorrect Answer
E None of these Correct Answer Incorrect Answer

Solution

ATQ, Let Ritu's present age be represented as x, and Rajni's age as 36 - x. Three years ago, Ritu's age was x - 3, and Rajni's age was 36 - x - 3. In the future, after 4 years, Ritu's age will be x + 4. Given that three years ago, Rajni's age was twice Ritu's age, we can set up the equation: 36 - x - 3 = 2(x - 3). Solving for x: 36 - x = 2x - 6, 3x = 42, x = 14 years. So, Ritu's age after 4 years will be: x + 4 = 14 + 4 = 18 years.

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