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    Question

    The monthly incomes of 'A' and 'B' are in the ratio of

    3:4, respectively. Both 'A' and 'B' have identical monthly expenditures, while their monthly savings are in the ratio of 1:2. Calculate the percentage of 'B's expenditure in relation to his total monthly income.
    A 60% Correct Answer Incorrect Answer
    B 55% Correct Answer Incorrect Answer
    C 45% Correct Answer Incorrect Answer
    D 50% Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let the monthly income of β€˜A’ and β€˜B’ be Rs. β€˜3x’ and Rs. β€˜4x’ respectively. Let the expenditure of β€˜A’ and β€˜B’ be Rs. β€˜y’. ATQ, (3x – y)/ (4x – y) = 1/2 Or, 6x – 2y = 4x – y So, 2x = y So, expenditure of β€˜B’ = Rs. β€˜2x’ Required percentage = (2x/4x) Γ— 100 = 50%

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