Positive integer y is 50 percent of 50 percent of positive integer x, and y percent of x equals 4. What is the value of x?	Choose the correct choice from the following
A) 40  B) 100  C) 200  D) 400  E) 600
y = 0.5*0.5*x = x/4   y%*x = 4   (y/100)*x = 4   (x/400)*x = 4   x^2 = 4*400   x = 40   The answer is 40.
<result>A</result>
Positive integer y is 50 percent of 50 percent of positive integer x, and y percent of x equals 4. What is the value of x?