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Given that , List price (marked price) of an article = Rs. 900
Let the marked price of the article be Rs. 100. on discount of 40% ,
Here , Selling price of an object = Rs. 2100 a = 40% , b = -25%Using the given formula,
Given that , S.P. of article = Rs. 532 , discount = 5%Let the C.P. of article be Rs. y.
Let the marked price of book be Rs. 100.C.P. for the retailer = Rs. (100 – 30) = Rs. 70On 10% discount , S.P. for the retailer = Rs. 90Profit = S.P. - C.P. = 90 - 70 = Rs. 20