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    Question

    A sum of money lent at compound interest at the rate of

    10% per annum is paid back in three equal instalments of Rs 3,993. Find the sum?
    A Rs 9390 Correct Answer Incorrect Answer
    B Rs 6930 Correct Answer Incorrect Answer
    C Rs 9000 Correct Answer Incorrect Answer
    D Rs 9930 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Sum = Instalment {10/11 + (10/11)2+ (10/11)3 } Sum = 3,993 {10/11 + 100/121 + 1000/1331} = 3993 {(1210 + 1100 + 1000)/1331} = 3993 {3310/1331} = Rs 9930

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