ABC26GN0741 · Decimal Fractions

Subject: General Aptitude · Chapter: Decimal Fractions · Exam: 2010 · Marks: · Difficulty:

If $1.5 x=0.04 y$, then the value of $\left(\frac{y-x}{y+x}\right)$ is
(a)$\frac{730}{77}$
(b)$\frac{73}{77}$
(c)$\frac{7.3}{77}$
(d)None of these
Answer
Answer (as printed): B
Explanation
$\frac{x}{y}=\frac{0.04}{1.5}=\frac{4}{150}=\frac{2}{75} \Rightarrow \frac{y-x}{y+x}=\frac{1-\frac{x}{y}}{1+\frac{x}{y}}=\frac{1-\frac{2}{75}}{1+\frac{2}{75}}=\frac{73}{77}$.

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

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