If 45% of z is 90% of y and y is 75% of x, what percent of x is z?
Select the correct option:
A) 200
B) 160
C) 100
D) 65
E) 150
(45/100)z = (90/100)y   and y = (75/100)x i.e. y = (3/4)x   i.e. (45/100)z = (90/100)*(3/4)x   i.e. z = (90*3)x/(45*4)   i.e. z = (1.5)x = (150/100)x   i.e. z is 150% of x   Answer: Option 150
<result>E</result>
If 45% of z is 90% of y and y is 75% of x, what percent of x is z?