If 90% of A = 30% of B and B = 2x% of A, then the value of x is :

A. 450

B. 400

C. 300

D. 150

Answer: Option D

Solution(By Examveda Team)

90% of A = 30% of B
90A = 30B
⇒ B = 3A ..... (i)
B = $$\frac{2x}{100}$$ × A
3A = $$\frac{2x}{100}$$ × A
⇒ x = 150