A book sells for Tk. 65. This price gives the seller a profit of 30%. what will be the new selling price (in Tk) if he cuts the profit to 10%?

A book sells for Tk. 65. This price gives the seller a profit of 30%. what will be the new selling price (in Tk) if he cuts the profit to 10%? Correct Answer 55

Let cost = x x + x× 30% = 65 1.3x = 65 x = 65 × 10 / 13 x = 50 New profit = 50 × 10% = 5 New selling price = 50 + 5 = 55
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