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    Question

    Anita spends 18% of her monthly income on rent and 70% of

    the rest on household expenditure. If she saves Rs. 1,890, then find her monthly income.
    A Rs.7,680 Correct Answer Incorrect Answer
    B Rs.5,625 Correct Answer Incorrect Answer
    C Rs.6,324 Correct Answer Incorrect Answer
    D Rs.7,500 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the monthly income of Anita be Rs. 100b.

    Money spent on rent = 18% of 100b = (0.18) × 100b = Rs. 18b

    Remaining money = 100b – 18b = Rs. 82b

    Money spent on household expenditure = 70% of 82b = (0.70) × 82 = Rs. 57.4b

    Savings of Anita = 82b – 57.4b = Rs. 24.6b

    So, 24.6b = 1,890

    Or, ‘b’ = 76.8

    Therefore, monthly income = Rs.7,680

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