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      Question

      The interest obtained on Rs. (2p + 600) at 18% p.a. for

      5 years (simple interest) is Rs. (p + 840). Find the ratio (p - 75) :(p + 25)
      A 5:4 Correct Answer Incorrect Answer
      B 2:3 Correct Answer Incorrect Answer
      C 5:7 Correct Answer Incorrect Answer
      D 3:4 Correct Answer Incorrect Answer

      Solution

      ATQ, Simple interest = Principal ├Ч Rate ├Ч Time ├╖ 100 So, p + 840 = (2p + 600) ├Ч 18 ├Ч 5 ├╖ 100 Or, p + 840 = 1.8p + 540 Or, 0.8p = 300 Or, p = 375 Required ratio = (p - 75) :(p + 25) = (375 - 75) :(375 + 25) = 300:400 = 3:4

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