At a selling price of Tk 273 a book yields 30% profit. What selling price (in Taka) will yield the profit of 10%?

At a selling price of Tk 273 a book yields 30% profit. What selling price (in Taka) will yield the profit of 10%? Correct Answer 231

At 30% profit , If selling price is Tk.130 then cost is Tk.100 If selling price is Tk 273 then cost is Tk = (100×273)/130 = Tk.210 Selling price = 210 + 210 ×10% = 210 + 21 = 231
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