A sum of money was invested at simple interest at a certain rate for 5 years. Had it been invested at a 5\% higher rate, it would have fetched 500 more. What was the principal amount?

  1. A. 2,000
  2. B. 1,800
  3. C. 1,600
  4. D. 1,200

Correct Answer: A. 2,000

Explanation

The extra interest of 500 is generated by the additional 5\% rate over 5 years. So, \frac{P \times 5 \times 5}{100} = 500 \implies P = \frac{500 \times 100}{25} = 2000.

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