If a + 2b = 6 and ab = 4, then what is $$\frac{2}{a} + \frac{1}{b} = ?$$

A. $$\frac{1}{2}$$

B. $$\frac{1}{3}$$

C. $$\frac{3}{2}$$

D. 2

E. $$\frac{5}{2}$$

Answer: Option C

Solution(By Examveda Team)

$$\eqalign{ & \frac{2}{a} + \frac{1}{b} \cr & = \frac{{2b + a}}{{ab}} \cr & = \frac{6}{4} \cr & = \frac{3}{2} \cr} $$