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  • Question
  • A person closer his account in an investment scheme by withdrawing ? 10000. One year ago, he had withdraw ? 6000. Two years ago, he had withdrawn ? 5000. Three years ago, he had not withdrawn any money. How much money had he deposited approximately at the time of opening the account 4 yr ago, if the annual simple interest is 10%?


  • Options
  • A. ? 15600
  • B. ? 16500
  • C. ? 17280
  • D. None of these

  • Correct Answer
  • None of these 

    Explanation

    Suppose the person had deposited ? P at the time of opening the account .
    ? After one year he had P + (P x 10 x 1)/100 = ? 11P/10

    After two years, he had
    11P/10 + (11P/10 x 10 x 1)/100 = ? 121P/100 ...(i)

    After withdrawn ? 5000 from ? 121P/100, the balance
    = ? (121P - 500000)/100

    After 3 yr, he had
    (121P - 500000)/100 + [(121P - 500000)/100 x 10 x 1]/100
    = 11(121P - 500000)/100 ... (ii)

    After withdrawn ? 6000 from amount (ii) the balance
    = (1331P/1000 - 11500)

    ? After 4 yr, he had ? (1331P - 5500000)/1000 + 10% of ? (1331P - 5500000)/1000
    = ? (11/10) x (1331P/1000 - 11500) ... (iii)

    After withdrawn ? 10000 from amount (iii) the balance =0
    ? 11/10(1331P/1000 - 11500) - 10000 = 0
    ? P = ? 15470


  • More questions

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    • 2. 
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    • Options
    • A. 4.5
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    • 3. 
      For any integers a and b with HCF (a, b) = 1, what is HCF (a + b, a - b) equal to?

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    • 4. 5358 x 51 =?

    • Options
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    • 5. Which of the following numbers is divisible by each one of 3, 7, 9 and 11?

    • Options
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    • 6. 
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    • Options
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