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    Question

    Nisha deposits Rs. 'z' and Rs. (z + 1000) in two accounts

    for 1 year each. The first earns 11% and the second 9% simple interest. If the total interest from both is Rs. 1,960, determine the value of 'z'.
    A 2520 Correct Answer Incorrect Answer
    B 3350 Correct Answer Incorrect Answer
    C 1576 Correct Answer Incorrect Answer
    D 3480 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,
    Simple interest = Principal × Rate × Time ÷ 100

    ATQ,

    z × 11 × 1 ÷ 100 + (z + 1000) × 9 × 1 ÷ 100 = 1960

    → 0.11z + 0.09z + 90 = 1960

    → 0.20z = 1960 - 90 = 1870

    → z = 1870 ÷ 0.20 = 9350

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