Multiple Choice Questions on A person divided a sum of Rs 17 200 into three parts and invested at 5 6 and 9 per annum simple inte........... for CDS Exam Preparation

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Multiple Choice Questions

A person divided a sum of Rs 17 200 into three parts and invested at 5 6 and 9 per annum simple inte...........

Quantitative Aptitude (CDS) Simple Interest
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    A person divided a sum of Rs. 17,200 into three parts and invested at 5%. 6% and 9% per annum simple interest. At the end of two years, he got the same interest on each part of money. What is the money invested at 9%?

    Rs. 3,200

    Incorrect Answer

    Rs. 4,000

    Correct Answer

    Rs. 4,800

    Incorrect Answer

    Rs. 5000

    Incorrect Answer
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    Explanation:

    Let sum invested @ 5% be P1, @ 6% be P2 then @ 9% = 17200-(P1+P2)

    So according to question P1*5*2/100 = P2*6*2/100 or P1 = (6/5) P2

    Also P2*6*2/100 = [17200-(P1+P2)]*9*2/100

    Or 2 P2 = [17200 – (11/5)P2] * 3

    Or (2 + 33/5)P2 = 17200 * 3

    P2 = 17200 * 3 * 5 / 43 = 6000

    So P1 = 6/5

    P2 = 7200 So Sum invested @ 9% = 17200 –(6000+7200) = Rs 4000

    By: Munesh Kumari
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