The ages of A and B are in the ratio 5:3. After 6 years, their ages will be in ratio 7:5. What is A's present age?

A 15 years

B 20 years

C 25 years

D 30 years

✓ Correct Answer: Option A

(5x+6)/(3x+6)=7/5. 25x+30=21x+42. 4x=12. x=3. A=15.

💡 Why is A) the correct answer?

The correct answer to the question "The ages of A and B are in the ratio 5:3. After 6 years, their ages will be in ratio 7:5. What is A's present age?" is Option A: 15 years.

The other options — B) 20 years, C) 25 years, D) 30 years — are incorrect for this Mathematics question. As explained above: (5x+6)/(3x+6)=7/5. 25x+30=21x+42. 4x=12. x=3. A=15.

📚 About This Mathematics Practice Question

This 2-level Mathematics question from the Quantitative Reasoning topic is part of One Paper Preparation's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free Mathematics practice test or use flashcards for spaced repetition review.

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The ages of A and B are in the ratio 5:3. After 6 years, their ages will be in ratio 7:5. What is A's present age?

✓ Correct Answer: Option A

📚 About This Mathematics Practice Question

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