Multiple choice

If the simple interest on a certain sum for 3 years at 8% per annum is half of the compound interest on Rs.4000 for 2 years at 10% per annum, what is the sum?

  1. Rs. 1250

  2. Rs. 1750

  3. Rs. 2000

  4. Rs. 1500

  5. इनमें से कोई नहीं
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

CI on Rs.4000 for 2 years at 10% = 4000[(1.1)^2 - 1] = 4000×0.21 = Rs.840. Half is Rs.420. This is SI for 3 years at 8%, so sum = 420/(3×0.08) = 420/0.24 = Rs.1750.

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