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Question
A shopkeeper marks the price of an article at Rs. 1200. Find the selling price, if he allows:
three successive discounts of 10%, 8% and 5%.
Solution
S.P. = `(1 - "d"_1/100)(1 - "d"_2/100)(1 - "d"_3/100)` of M.P.
⇒ S.P. = `(1 - 10/100)(1 - 8/100)(1 - 5/100) xx 1200`
⇒ S.P. = `(90)/(100) xx (92)/(100) xx (95)/(100) xx 1200`
⇒ S.P. = Rs.944.
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