GIVEN: Selling price of the article is Rs. 432 Profit gained on the article is 35% FORMULA USED: Selling price = {1 + (Profit %) /100} × Cost Price CALCULATIONS: ⇒ 432=1+(
35
100
)× Cost Price ⇒ Cost Price = 432/ 1.35 = 320 Hence, Cost price of the article is Rs. 320. Alternate solution Such questions can be solve easily by assuming Cost price 100x. Hence, profit = 35x and selling price = 135x According to question, 135x=432 ⇒ x =