ABC26GN0762 · Decimal Fractions

Subject: General Aptitude · Chapter: Decimal Fractions · Exam: · Marks: · Difficulty:

$\frac{(36.54)^{2}-(3.46)^{2}}{\text { ? }}=40$

(a)3.308

(b)4

(c)33.08

(d)330.8

Answer

Answer (as printed): C

Explanation

Let $\frac{(36.54)^2-(3.46)^2}{x}=40$. Then $x=\frac{(36.54)^2-(3.46)^2}{40}=\frac{a^2-b^2}{a+b}=(a-b)=(36.54-3.46)=33.08$.

Explanation as extracted from the printed page; notation may be imperfect.