If 2.5x = 0.05y, then $$\frac{y-x}{y+x}$$​ = ?

Correct option is D

Given:

2.5x = 0.05y

We need to determine the value of:

​$$\frac{y - x}{y + x}$$​

Solution:

2.5x = 0.05y

y =$$\frac{2.5}{0.05}$$x

y= 50 x

$$\frac{y - x}{y + x} = \frac{50x - x}{50x + x} = \frac{49x}{51x}$$​​

=$$\frac{49}{51}$$​