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    Question

    Income of 'M' is 30% more than that of 'N'. 'M' and 'N'

    save 50% and 40% of their respective incomes. If their expenditure difference is Rs. 600, what is the saving of 'M'?
    A Rs.7,800 Correct Answer Incorrect Answer
    B Rs.5,572 Correct Answer Incorrect Answer
    C Rs.10,800 Correct Answer Incorrect Answer
    D Rs.3,250 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the income of 'N' be Rs. '100n'

    Income of 'M' = 1.3 Ă— 100n = Rs. '130n'

    Expenditure of 'M' = 0.5 Ă— 130n = Rs. '65n'

    Expenditure of 'N' = 0.6 Ă— 100n = Rs. '60n'

    So, 65n - 60n = 600

    Or, 5n = 600

    Or, 'n' = 120

    Savings of 'M' = 130n - 65n = 65n = 65 Ă— 120 = Rs. 7,800

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