A lady shopkeeper allows her customers 10% discount on the marked price of the goods and still gets a profit of 25%. What is the cost price of a fan for her marked at Rs. 1250?
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Marked price (M.P) of fan = Rs. 1250 Discount =10% ∴ S.P of the fan =M.P×(100−discount%)100 =1250(100−10)100=1250×90100=Rs.1125 Gain =25% ∴ Cost price =S.P×100100+gain% =Rs.1125×100100+25=Rs.1125×100125