Multiple choice

What sum of money will amount to Rs. 520 in 5 years and 568 in 7 years at simple interest? किसी साधारण ब्याज से कोई धनराशि 5 वर्ष में 520 रू. और 7 वर्ष में 568 रू. हो जाती है। तो धन राशि क्या होगी?

  1. Rs. 400

  2. Rs. 350

  3. Rs. 510

  4. Rs. 375
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A Correct answer
Explanation

Interest for 2 years = 568 - 520 = Rs 48. Interest per year = Rs 24. Interest for 5 years = 24 × 5 = Rs 120. Principal = Amount after 5 years - Interest for 5 years = 520 - 120 = Rs 400. This uses the simple interest property that interest is proportional to time.

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