SATHEE: Quantitative Aptitude Ques 404

Quantitative Aptitude Ques 404

Question: If $ 9\sqrt{x}=\sqrt{12}+\sqrt{147}, $ then x is equal to

Options:

A) 2

B) 3

C) 4

D) 5

Show Answer

Answer:

Correct Answer: B

Solution:

$ 9\sqrt{x}=\sqrt{12}+\sqrt{147} $

$ \Rightarrow $ $ 9\sqrt{x}=\sqrt{4\times 3}+\sqrt{49\times 3} $

$ \Rightarrow $ $ 9\sqrt{x}=\sqrt{3},(\sqrt{4}+\sqrt{49}) $

$ \Rightarrow $ $ 9\sqrt{x}=\sqrt{3},(2+7)=9\sqrt{3} $
$ \Rightarrow $ $ \sqrt{x}=\sqrt{3} $

$ \therefore $ $ x=3 $

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Quantitative Aptitude Ques 404

Question: If $ 9\sqrt{x}=\sqrt{12}+\sqrt{147}, $ then x is equal to

Options:

Answer:

Solution:

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