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    Question

    An individual borrowed Rs. 9,600 at 13% p.a. and another

    Rs. 6,400 at 11% p.a., both on simple interest. If the total interest after ‘n’ years is Rs. 5,472, find the value of ‘n’.
    A 3.7 yrs Correct Answer Incorrect Answer
    B 8.5 yrs Correct Answer Incorrect Answer
    C 2.8 yrs Correct Answer Incorrect Answer
    D 5.9 yrs Correct Answer Incorrect Answer

    Solution

    ATQ,

    9600 × (13/100) × n + 6400 × (11/100) × n = 5472

    Or, 1248n + 704n = 5472

    So, n = (5472/1952) = 2.8 years

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