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SSC Selection Post 2020 PYQ — Question 67

SSC Selection Post - Matriculation Level 2020 - 6 Nov 2020 - Shift 1 • Quantitative Aptitude • Q67

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The marked price of an article is ₹530. After two successive discounts, it is sold for ₹396.44. If the first discount is x% and the second discount is 15%, then what is the value of x?

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Correct answer: C

Explanation

The correct answer is option 3 i.e. 12.

According to the question,

⇒ 396.44 = 530×(1−x100)×85100530\times({1-{x\over100})\times{85\over100}}

⇒ 0.88 = (1−x100)(1-{x\over100})

⇒ 0.88 = 100−x100100-x\over100

⇒ 100 - x = 88

⇒ x = 12%