The marked price of a trouser is four times the cost price. To earn 64 percent profit, what should be the discount percentage?

55 percent 62 percent 65 percent 59 percent

59 percent

Let cost price = X , Marked Price = 4X If Profit is 64% , Then selling price = \(\frac{164}{100}\)X  Selling price = 1.64X Now , Discount% = \(\frac{MP-SP}{MP}\) × 100% Discount% = \(\frac{4X-1.64X}{4X}\) × 100% = 59%