The marked price of article is 25 % above the selling price and the cost is 20% below the selling price. find the rate of discount and profit percentage.

Suppose selling price is x

Marked Price = 1.25 x

Cost Price = 1.25 x - .4(1.25x)= 1.25x- .5x

Cost Price = .75x

Selling Price = Cost Price + Profit

Profit = Selling price - Cost price

= x - 0.75x

=0.25x

Hence Profit is 25 %

Discount is 25 %

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