Multiple choice

What will be the sum if the sum at identical compound interest becomes Rs. 1020 after three years and Rs. 8160 after six years?

  1. Rs. 118.8

  2. Rs. 127.5

  3. Rs. 220.5

  4. Rs. 375.4

  5. Rs. 410.2
Reveal answer Fill a bubble to check yourself
B Correct answer
AI explanation

Since the sum doubles every three years due to identical compound interest, the initial sum is found by halving the amount from the previous three-year block. The amount after three years is Rs. 1020, so halving it gives Rs. 510. Halving Rs. 510 gives Rs. 255, and halving Rs. 255 gives the original sum of Rs. 127.5.

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