Marked price and cost price of an article are in ratio 5 : 4. If the profit earned by selling the article is 12.5%, then what is the discount percentage?

10

Marked price and cost price of an article are in ratio 5 : 4

Profit is 12.5% 

Cost price = 4x

Selling price = 112.5% of 4 = 4.5x

Marked price = 5x

Discount = 5x - 4.5x = 0.5x

Discount% = 0.5x × \(\frac{100}{5x}\) = 10%