Mathematics · Compound Interest
If a sum of money on compound interest (compounded annually) becomes three times in 4 years, then with the same interest rate, the sum will become 81 times in how many years?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 116 years✓
- 215 years
- 318 years
- 412 years
Correct answer
16 years
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