Multiple choice

The rate of interest per annum at which the total simple interest of a certain capital for 1 year is equal to the total simple interest of the same capital at the rate of 5% per annum for 2 years, is वह ब्याज की दर जिस पर किसी निश्चित पूँजी पर 1 वर्ष में साधारण ब्याज उसी समान पूँजी पर 5% ब्याज की दर से 2 वर्षों में कुल साधारण ब्याज के बराबर है, है ?

  1. 2.5%

  2. 10%

  3. 25%

  4. 12.5%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let the required rate be r% and capital be P. Simple interest for 1 year at r% = P × r/100. Simple interest for 2 years at 5% = P × 5 × 2/100 = P × 10/100. Equating: P × r/100 = P × 10/100 → r = 10%. Option B is correct.

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