Multiple choice

If an amount doubles itself in $5$ years at simple interest it will become three times in -

  1. $10$ years
  2. $12$ years
  3. $8$ years

  4. None of these
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A Correct answer
Explanation

Simple interest: Amount doubles in 5 years means interest earned equals principal in 5 years. To become three times, interest must be 2 * principal. This takes 2 * 5 = 10 years.

AI explanation

If an amount doubles in 5 years under simple interest, the interest earned equals the principal in 5 years. To become three times the original amount, the interest earned must be twice the principal. Since each multiple of the principal takes 5 years, earning two multiples requires 5 * 2 years. The amount will become three times in 10 years.

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