If 20% of (A + B) = 50% of B, then value of 2A - B/2A + B is :

Answer: Option A

$$\frac{20}{100}$$ (A + B) = $$\frac{50}{100}$$ (B)
2A + 2B = 5B
2A = 3B
A = $$\frac{3}{2}$$ put value of A in given equation
$$\frac{2A-B}{2A+B}$$
= $$\frac{3B-B}{3B+B}$$
= $$\frac{2B}{4B}$$
= $$\frac{1}{2}$$