If 90% of A = 30% of B and B = (2x)% of A, then the value of x is
it is given that 90% of A = 30% of B
$$\frac{90}{100}$$ A = $$\frac{30}{100}$$B
B = 3A
it means B is 300 % of A
hence B = (2 x 150)% of A
so x = 150 %
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