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.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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