Question
If Arun’s salary was decreased by 50% and subsequently
increased by 50%, then how much per cent did he lose?Solution
Let Arun’s original salary = ₹100 After 50% decrease: ₹100 - 50% of ₹100 = ₹100 - ₹50 = ₹50 After 50% increase on ₹50: ₹50 + 50% of ₹50 = ₹50 + ₹25 = ₹75 Loss = ₹100 - ₹75 = ₹25 Percentage loss = (25 / 100) × 100 = 25%
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