At a selling price of Taka 275 a book yields 25% profit. What selling price will yield the profit of 10%?

At a selling price of Taka 275 a book yields 25% profit. What selling price will yield the profit of 10%? Correct Answer 242

Percentage elling price at 25% profit = 100 + 25 = 125 TK   Percentage selling price at 10% profit = 100 + 10 = 110 TK If parcentage selling price is 125 TK then actual selling price is 275 TK   So, parcentage selling price is 110 TK then actual selling price is 275×110/125 = 242 TK  
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