Quantitative Aptitude Ques 903

Question: Directions: What will come in place of question mark (?) in the following questions?

64.5% of 800 + 36.4% of $ 1500={{?}^{2}}+38 $

Options:

A) 32

B) 38

C) 42

D) 48

E) 34

Show Answer

Answer:

Correct Answer: A

Solution:

  • $ 64.5% $ of $ 800+36.4% $ of $ 1500={{?}^{2}}+38 $

$ \Rightarrow $ $ \frac{64.5}{100}\times 800+\frac{36.4}{100}\times 1500={{?}^{2}}+38 $

$ \Rightarrow $ $ 516+546={{?}^{2}}+38 $

$ \Rightarrow $ $ {{?}^{2}}=1062-38 $

$ \Rightarrow $ $ {{?}^{2}}=1024 $
$ \Rightarrow $ $ ?=32 $

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