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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 ‘A’ and ‘B’ be Rs. ‘3x’ and Rs. ‘4x’ respectively. Let the expenditure of ‘A’ and ‘B’ be Rs. ‘y’. ATQ, (3x – y)/ (4x – y) = 1/2 Or, 6x – 2y = 4x – y So, 2x = y So, expenditure of ‘B’ = Rs. ‘2x’ Required percentage = (2x/4x) × 100 = 50%

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