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    Question

    Ajay invested Rs.a in SI at 7% rate of interest per

    annum for 10 years. Vishal invested the same amount in SI at 5% rate of interest per annum for 8 years and the difference between the interest obtained by Ajay and Vishal is Rs.2100. Find the amount invested by Vishal.
    A 5000 Correct Answer Incorrect Answer
    B 2000 Correct Answer Incorrect Answer
    C 7000 Correct Answer Incorrect Answer
    D 3000 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    According to question, => (a × 7 × 10)/100 – (a × 5 × 8)/100 = 2100 => 70a/100 – 40a/100 = 2100 => 30a/100 = 2100 => a = Rs.7000

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