A sum of money becomes five times of its

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Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

Compound Interest

Question:

A sum of money becomes five times of itself in 9 years at compound interest. In how many years will it becomes 25 times of itself ?

Options:

18 years

16 years

20 years

25 years

Correct Answer:

18 years

Explanation:

5 times in = 9 years

5² time in = 9 × 2 years

25 times in = 18 years