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Question

A trader offers "Buy two, get one free" on a certain pair of trousers. If the marked price of the pair of trousers is ₹ 2700, and the trader still earns a profit of 20%, find the cost price of one pair of trousers for the trader.

This question was previously asked in
RRB NTPC 2025 Under Graduate CBT 1 Question Paper PDF (20-Jun-2026) (Shift 3)
The correct answer is

₹ 1,500

Buy 2, get 1 free means for every 3 pairs given, the customer pays for only 2 at the marked price of ₹2,700 each: revenue \(=2\times2700=5400\).

Let the trader's cost per pair be c. Total cost for 3 pairs: \(3c\). With 20% profit: \(5400 = 1.2\times3c \Rightarrow 3c = 4500 \Rightarrow c = 1500\).

Hence, the cost price of one pair of trousers for the trader is ₹1,500.

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Important Questions from Discount and MP

  1. The marked price of an article is Rs. 1500. A shopkeeper sells it by giving 20% discount on its marked price. If the cost price of the article is Rs. 991, then his profit (in Rs.) is:

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  3. The marked price of an article is Rs. 240. A shopkeeper sells it by allowing 18% discount on its marked price and still gains 23%. What is the cost price (in Rs.) of the article?

  4. Three shopkeepers A, B and C marked on an identical article at Rs. 4820. A, B and C sold their article on successive discounts of 20% and 20%; 25% and 15%; 30% and 10% respectively. Which shopkeeper gives the maximum discount and how much (in Rs.)?

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