Multiple choice

Some amount on simple interest rate becomes double in 10 years. In how many years, the same amount will become triple?

  1. 20 years

  2. 25 years

  3. 28 years

  4. 30 years
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A Correct answer
Explanation

Simple interest doubles the principal in 10 years, meaning the interest earned equals the principal in 10 years. To triple the amount, the interest earned must be twice the principal, which takes 20 years.

AI explanation

Since the principal doubles in 10 years, the interest earned equals the principal over 10 years. To become triple, the interest earned must be twice the principal, which takes exactly twice the time. Therefore, the amount will become triple in 20 years.

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