Multiple choice

A lent be Rs. 5000 to B for 2 years and Rs. 3000 to C for 4 years on simple interest at the same rate of interest and received Rs. 2200 in all from both as interest. The rate of interest per annum is- A, B को 5000 रू. 2 वर्ष के लिए और C को 3000 रू. 4 वर्ष के लिए साधारण ब्याज की समान दर पर उधार देता है और वह दोनों से 2200 रू. ब्याज प्राप्त करता है। ब्याज की वार्षिक दर है-

  1. 7%

  2. 5%

  3. 8%

  4. 10%
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D Correct answer
Explanation

For B: Interest = (5000 × 2 × r)/100 = 100r. For C: Interest = (3000 × 4 × r)/100 = 120r. Total interest = 100r + 120r = 220r = 2200. Therefore r = 10%. The rate of interest per annum is 10%.

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