Multiple choice

The difference between compound interest and simple interest on Rs. x at 15% per annum for 2 years is Rs. 9. What is the value of x?

  1. 600

  2. 400

  3. 450

  4. 500
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Difference between CI and SI for 2 years = P * (r/100)^2. 9 = x * (15/100)^2 => 9 = x * (0.15)^2 => 9 = x * 0.0225 => x = 9 / 0.0225 = 400.

AI explanation

Using the two-year difference formula, Difference = P * (R / 100)^2. Plugging in the given values gives 9 = x * (15 / 100)^2. This simplifies to 9 = x * 0.0225. Solving for x yields 400.

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