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      Question

      A principal amount of Rs. 2,000 earns a simple interest of

      Rs. 375 in 2 years and 6 months. What is the annual rate of interest?
      A 7.5% Correct Answer Incorrect Answer
      B 12% Correct Answer Incorrect Answer
      C 6.5% Correct Answer Incorrect Answer
      D 18% Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let the rate of interest = β€˜r%’ p.a.

      2 years and 6 months = 2 Γ— 12 + 6 = 30 months

      We have,

      [2000 Γ— r Γ— (30/12)] Γ· 100 = 375

      β‡’ 50r = 375

      β‡’ r = 375 Γ· 50 = 7.5

      So, rate of interest = 7.5%

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