Quantitative Aptitude Ques 1910

Question: Directions: What approximate value will come in place of question mark (?) in the given questions’? (You are not expected to calculate the exact value.) [IBPS (PO/MT) 2015]

$ {{11.95}^{2}}\times 5.05+{{15.01}^{2}}\times 2.99=? $

Options:

A) 11500

B) 12150

C) 11885

D) 11180

E) 1395

Show Answer

Answer:

Correct Answer: E

Solution:

  • $ ?={{11.95}^{2}}\times 5.05+{{15.01}^{2}}\times 2.99 $

$ \Rightarrow $ $ ?\approx 12^{2}\times 5+15^{2}\times 3 $

$ \Rightarrow $ $ ?=144\times 5+225\times 3 $
$ \Rightarrow $ $ ?=1395 $