Question

If $\left(\frac{4}{5}\right)x$ = $\left(\frac{5}{100}\right)y$, then the value of $\left(\frac{(y+x)}{(y-x)}\right)$ is:

• A.
• B.
• C.
• D. None of these

Answer 1

The correct option is A

$\left(\frac{4}{5}\right)x=\left(\frac{5}{100}\right)yx=\left(\frac{5}{80}\right)y\left(\frac{(y+x)}{(y-x)}\right)=\frac{y+x}{y-x}=\frac{y+\frac{5y}{80}}{y-\frac{5y}{80}}=\frac{\frac{85y}{80}}{\frac{75y}{80}}=\frac{85y}{75y}=\frac{17}{15}$