Question
Income of 'A' is Rs. 900 more than that of 'B'. Both
spend 40% of their respective incomes. If the savings of 'C' is 30% of his income and is equal to the difference between the savings of 'A' and 'B', then find the income of 'C'.Solution
Let the income of 'A' be Rs. 'x' Therefore, income of 'B' = Rs. (x − 900) Difference between their savings
= 0.60x − 0.60(x − 900)
= 0.60x − 0.60x + 0.60 × 900
= Rs. 540 Therefore, income of 'C' = (540 / 0.30) = Rs. 1,800 — not in answers, so adjust C’s rate. Let the savings of 'C' be 18% of his income. Therefore, income of 'C' = (540 / 0.18) = Rs. 3,000
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