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If a sum on compound interest becomes 3 times in a certain number of years, then with the same interest rate, in how many years will it become 27 times?

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If a sum on compound interest becomes 3 times in a certain number of years, then with the same interest rate, in how many years will it become 27 times? Answer: 12 Years

If a sum becomes 3 times in x years, and you're using compound interest, then: In 2x years, it becomes 3×3=9 time In 3x years, it becomes 3×3×3=27 time So, if the sum triples in 4 years, it becomes 27 times in 4×3=12 years.

Question context

This question is part of 📏 Arithmetic Aptitude within the broader 🧠 Aptitude Mastery subject and appears in the ASF Airports Security Force preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.