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Let salary = x. Expenditure = 30% of x + 25% of x = 0.30x + 0.25x = 0.55x. Savings = x - Expenditure = x - 0.55x = 0.45x. Given savings = ₹18,000. 0.45x = 18000 → x = 18000 / 0.45 = ₹40,000. Correct answer: A) ₹40,000
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