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At a store everything is sold to 10% less than the price marked. If the owner buys a product for Rs. 90. What price should he mark them, if he wants to make a 10% profit on his cost?

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At a store everything is sold to 10% less than the price marked. If the owner buys a product for Rs. 90. What price should he mark them, if he wants to make a 10% profit on his cost? Answer: 101

Let the marked price be Rs. x. Since items are sold at 10% less than the marked price, The selling price (SP) = x−10% of x=0.9x Desired profit = 10% on cost Cost price (CP) = Rs 90 Profit = 10% of 90 = Rs 9 So, desired Selling Price (SP) =Rs 90 + Rs9 = Rs 99 Set up the equation We already said that the selling price is 0.9x

Question context

This question is part of 📏 Arithmetic Aptitude within the broader 🧠 Aptitude Mastery subject and appears in the ASF Airports Security Force preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.