If 45% of z is 120% of y and y is 75% of x, what percent of x is z?
Select
A) 200  B) 160  C) 100  D) 65  E) 50

Rationale: "( 45 / 100 ) z = ( 120 / 100 ) y and y = ( 75 / 100 ) x i . e . y = ( 3 / 4 ) x i . e . ( 45 / 100 ) z = ( 120 / 100 ) * ( 3 / 4 ) x i . e . z = ( 120 * 3 ) x / ( 45 * 4 ) i . e . z = ( 2 ) x = ( 200 / 100 ) x i . e . z is 200 % of x answer : option a"
Answer: A