Multiple choice

How much time will it take for an amount of Rs. 900 to yield Rs. 81 as interest at 4.5% per annum of simple interest?

  1. 2 years

  2. 4 years

  3. 3 years

  4. 5 years
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A Correct answer
Explanation

SI = (P * R * T) / 100. 81 = (900 * 4.5 * T) / 100. 81 = 9 * 4.5 * T. 81 = 40.5 * T. T = 2.

AI explanation

Using the simple interest formula, time equals the simple interest multiplied by 100 and then divided by the product of the principal and the rate. Substituting the given values, the time is 81 multiplied by 100 and then divided by the product of 900 and 4.5. The calculation simplifies to 8100 divided by 4050, which results in a time of 2 years.

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