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SSC Selection Post 2020 PYQ — Question 71

SSC Selection Post - Matriculation Level 2020 - 14 Nov 2020 - Shift 1 • Quantitative Aptitude • Q71

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A is 20% more than B, B is 10% less than C, and C is 15% more than D. Which of the following is true?

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Correct answer: A

Explanation

The correct answer is option 1 i.e. A is 8% more than C.

A = 120B100120B\over100

B = 90C10090C\over100

C = 115D100115D\over100

Now,

⇒ A = 120B100120B\over 100

⇒ A = 120100×90C100{120\over100} × {90C\over100} = 108C100108C\over100

⇒ A = C + 8C1008C\over100

Thus, A is 8% more than C