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ATQ,
Let the cost price of article be Rs. '100b'
Marked price of article = 1.60 × 100b = Rs. '160b'
Selling price of article = 0.80 × 160b = Rs. '128b'
So, 128b = 4,800
Or, 'b' = 37.5
Therefore, required profit = 28 × 37.5 = Rs. 1,050
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