Question
The ratio of the income of ‘P’ and ‘Q’ is 9:7
and the ratio of their expenditure is 4:3. If each of them saves Rs. 4000, then find the sum of their incomes.Solution
Let the income of ‘P’ and ‘Q’ be Rs. ‘9x’ and Rs. ‘7x’, respectively. According to the question, (9x – 4000) / (7x – 4000) = 4/3 Or, 27x – 12000 = 28x – 16000 Or, x = 4000 Sum of incomes = 9x + 7x = 16x = 16 × 4000 = Rs. 64000
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