The printed price of an article is 40% higher than its cost price. Then the rate of discount such that he gains 12% profit is
Let C.P. = $$100x$$
Markup% = 40% => $$\frac{40}{100} * 100x = 40x$$
=> Marked price = $$100x+40x = 140x$$
Profit % = 12%
Profit = $$\frac{12}{100} * 100x = 12x$$
=> S.P. = $$100x+12x = 112x$$
Discount % = $$\frac{140x-112x}{140x}$$ * 100 = 20%
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