The following question has three statements. Study the question and the statements to decide which of the statement(s) is/are necessary to answer the question. Find the ratio of marked price and cost price. Statement I: If someone buys 6 articles at marked price, he gets 2 articles free Statement II: Profit earned by the shopkeeper is 12.5% Statement III: Discount of 25% is provided on marked price Correct Answer Either Statement (I) or (III) and statement (II) are required Statement I and II: If someone buys 6 articles at marked price, he gets 2 articles free and the profit earned by the shopkeeper is 12.5% ⇒ × 100 = 12.5 ⇒ 6MP - 8CP = CP ⇒ 6MP = 9CP ⇒ MP ∶ CP = 9 ∶ 6 = 3 ∶ 2 Statement II and III: Discount of 25% is provided on marked price. Profit earned by the shopkeeper is 12.5% ⇒ × 100 = 12.5 ⇒ 0.75MP = 1.125CP ⇒ MP ∶ CP = 3 ∶ 2 ∴ Either Statement (I) or (III) and statement (II) are required to answer the question