Question

0.394y = 1.036x, then the value of (x-y)/(x+y) is?

• A. -0.5
• B. -0.9
• C. -0.8
• D. -1.2
• E. None of these

Answer 1

The correct option is A

-0.5

$\frac{x}{y}=\frac{0.394}{1.036},(\frac{1}{1+\frac{y}{x}}-\frac{1}{\frac{x}{y}+1})=\frac{1}{3.63}-\frac{1}{1.38}=0.275-0.724=-0.45$ $\approx$-0.5